Huheey & Huheey 1972, p. 229; Mason 1988 Huheey, James E.; Huheey, Caroline L. (1972). "Anomalous properties of elements that follow "long periods" of elements". Journal of Chemical Education. 49 (4): 227-230. doi:10.1021/ed049p227. ISSN0021-9584. Mason, Joan (1988). "Periodic contractions among the elements: Or, on being the right size". Journal of Chemical Education. 65 (1): 17-20. doi:10.1021/ed065p17. ISSN0021-9584.
Slabon et al. 2012 Slabon, Adam; Budnyk, Serhiy; Cuervo‐Reyes, Eduardo; Wörle, Michael; Mensing, Christian; Nesper, Reinhard (2012-11-12). "Copper Silicides with the Highest Lithium Content: Li7CuSi2 Containing the 16-Electron Group [CuSi2]7− and Li7.3CuSi3 with Heterographene Nets2 ∞[CuSi]3.3−". Angewandte Chemie International Edition. 51 (46): 11594–11596. doi:10.1002/anie.201203504. ISSN1433-7851.
Banthorpe, Gatforde & Hollebone 1968, p. 61; Dillard & Goldberg 1971, p. 558 Banthorpe, D. V.; Gatford, C.; Hollebone, B. R. (1968-01-01). "Gas Chromatographic Separation of Olefins and Aromatic Hydrocarbons Using Thallium(I)-Nitrate: Glycol as Stationary Phase". Journal of Chromatographic Science. 6 (1): 61–62. doi:10.1093/chromsci/6.1.61. ISSN0021-9665. Dillard CR & Goldberg DE 1971, Chemistry: Reactions, Structure, and Properties, Macmillan, New York
Köhler & Whangbo 2008 Köhler, Jürgen; Whangbo, Myung-Hwan (2008-04-01). "Electronic Structure Study of the [Ag−Ag]4−, [Au−Au]4−, and [Hg−Hg]2− Zintl Anions in the Intermetallic Compounds Yb3Ag2, Ca5Au4, and Ca3Hg2: Transition Metal Anions As p-Metal Elements". Chemistry of Materials. 20 (8): 2751–2756. doi:10.1021/cm703590d. ISSN0897-4756.
Young et al. 1969; Geffner 1969; Jensen 2003 Young, J. A.; Malik, J. G.; Quagliano, J. V.; Danehy, J. P. (1969). "Chemical queries. Especially for introductory chemistry teachers: Do elements in the zinc subgroup belong to the transition series?". Journal of Chemical Education. 46 (4): 227‒229. doi:10.1021/ed046p227. Geffner, Saul L. (1969). "Teaching the transition elements". Journal of Chemical Education. 46 (5): 329. doi:10.1021/ed046p329.4. ISSN0021-9584. Jensen, William B. (2003). "The Place of Zinc, Cadmium, and Mercury in the Periodic Table". Journal of Chemical Education. 80 (8): 952-961. doi:10.1021/ed080p952. ISSN0021-9584.
Deiseroth 2008, pp. 179‒180; Sevov 1993 Deiseroth H-J 2008, 'Discrete and extended metal clusters in alloys with mercury and other Group 12 elements', in M Driess & H Nöth (eds), Molecular clusters of the main group elements, Wiley-VCH, Chichester, pp. 169‒187, ISBN978-3-527-61437-0 Sevov, Slavi C.; Ostenson, Jerome E.; Corbett, John D. (1993). "K8In10Hg: a Zintl phase with isolated In10Hg clusters". Journal of Alloys and Compounds. 202 (1–2): 289–294. doi:10.1016/0925-8388(93)90551-W.
Bobev & Sevov 2002 Bobev, Svilen; Sevov, Slavi C. (2002). "Five Ternary Zintl Phases in the Systems Alkali-Metal–Indium–Bismuth". Journal of Solid State Chemistry. 163 (2): 436–448. doi:10.1006/jssc.2001.9423.
Merinis, Legoux & Bouissières 1972; Kugler & Keller 1985, pp. 110, 116, 210–211, 224; Takahashi & Otozai 1986; Zuckerman & Hagen 1989, pp. 21–22 (21); Takahashi, Yano & Baba 1992 Merinis J, Legoux G & Bouissières G 1972, "Etude de la formation en phase gazeuse de composés interhalogénés d'astate par thermochromatographie" [Study of the gas-phase formation of interhalogen compounds of astatine by thermochromatography], Radiochemical and Radioanalytical Letters (in French), vol. 11, no. 1, pp. 59–64 Kugler HK & Keller C (eds) 1985, Gmelin Handbook of Inorganic and Organometallic chemistry, 8th ed., 'At, Astatine', system no. 8a, Springer-Verlag, Berlin, ISBN3-540-93516-9 Takahashi, N.; Otozai, K. (1986). "The mechanism of the reaction of elementary astatine with organic solvents". Journal of Radioanalytical and Nuclear Chemistry Letters. 103 (1): 1–9. doi:10.1007/BF02165358. ISSN0236-5731. Zuckerman JJ & Hagen AP 1989, Inorganic Reactions and Methods, the Formation of Bonds to Halogens, John Wiley & Sons, New York, ISBN978-0-471-18656-4 Takahashi N, Yano D & Baba H 1992, "Chemical behavior of astatine molecules", Proceedings of the international conference on evolution in beam applications, Takasaki, Japan, November 5‒8, 1991, pp. 536‒539
Johansen & Mackintosh 1970, pp. 121–4; Divakar, Mohan & Singh 1984, p. 2337; Dávila et al. 2002, p. 035411-3 Johansen G & Mackintosh AR 1970, 'Electronic structure and phase transitions in ytterbium', Solid State Communications, vol. 8, no. 2, pp. 121–4 Divakar, C.; Mohan, Murali; Singh, A. K. (1984-10-15). "The kinetics of pressure-induced fcc-bcc transformation in ytterbium". Journal of Applied Physics. 56 (8): 2337–2340. doi:10.1063/1.334270. ISSN0021-8979. Dávila, M. E.; Molodtsov, S. L.; Laubschat, C.; Asensio, M. C. (2002-07-19). "Structural determination of Yb single-crystal films grown on W(110) using photoelectron diffraction". Physical Review B. 66 (3): 035411–035418. doi:10.1103/PhysRevB.66.035411. ISSN0163-1829.
Hindman 1968, p. 434: 'The high values obtained for the [electrical] resistivity indicate that the metallic properties of neptunium are closer to the semimetals than the true metals. This is also true for other metals in the actinide series.'; Dunlap et al. 1970, pp. 44, 46: '...α-Np is a semimetal, in which covalency effects are believed to also be of importance...For a semimetal having strong covalent bonding, like α-Np...' Hindman JC 1968, 'Neptunium', in CA Hampel (ed.), The encyclopedia of the chemical elements, Reinhold, New York, pp. 432–7 Dunlap, B. D.; Brodsky, M. B.; Shenoy, G. K.; Kalvius, G. M. (1970-01-01). "Hyperfine Interactions and Anisotropic Lattice Vibrations of 237Np in α-Np Metal". Physical Review B. 1 (1): 44–49. doi:10.1103/PhysRevB.1.44. ISSN0556-2805.
Young et al. 1969, p. 228 Young, J. A.; Malik, J. G.; Quagliano, J. V.; Danehy, J. P. (1969). "Chemical queries. Especially for introductory chemistry teachers: Do elements in the zinc subgroup belong to the transition series?". Journal of Chemical Education. 46 (4): 227‒229. doi:10.1021/ed046p227.
Huheey & Huheey 1972, p. 229; Mason 1988 Huheey, James E.; Huheey, Caroline L. (1972). "Anomalous properties of elements that follow "long periods" of elements". Journal of Chemical Education. 49 (4): 227-230. doi:10.1021/ed049p227. ISSN0021-9584. Mason, Joan (1988). "Periodic contractions among the elements: Or, on being the right size". Journal of Chemical Education. 65 (1): 17-20. doi:10.1021/ed065p17. ISSN0021-9584.
Slabon et al. 2012 Slabon, Adam; Budnyk, Serhiy; Cuervo‐Reyes, Eduardo; Wörle, Michael; Mensing, Christian; Nesper, Reinhard (2012-11-12). "Copper Silicides with the Highest Lithium Content: Li7CuSi2 Containing the 16-Electron Group [CuSi2]7− and Li7.3CuSi3 with Heterographene Nets2 ∞[CuSi]3.3−". Angewandte Chemie International Edition. 51 (46): 11594–11596. doi:10.1002/anie.201203504. ISSN1433-7851.
Banthorpe, Gatforde & Hollebone 1968, p. 61; Dillard & Goldberg 1971, p. 558 Banthorpe, D. V.; Gatford, C.; Hollebone, B. R. (1968-01-01). "Gas Chromatographic Separation of Olefins and Aromatic Hydrocarbons Using Thallium(I)-Nitrate: Glycol as Stationary Phase". Journal of Chromatographic Science. 6 (1): 61–62. doi:10.1093/chromsci/6.1.61. ISSN0021-9665. Dillard CR & Goldberg DE 1971, Chemistry: Reactions, Structure, and Properties, Macmillan, New York
Köhler & Whangbo 2008 Köhler, Jürgen; Whangbo, Myung-Hwan (2008-04-01). "Electronic Structure Study of the [Ag−Ag]4−, [Au−Au]4−, and [Hg−Hg]2− Zintl Anions in the Intermetallic Compounds Yb3Ag2, Ca5Au4, and Ca3Hg2: Transition Metal Anions As p-Metal Elements". Chemistry of Materials. 20 (8): 2751–2756. doi:10.1021/cm703590d. ISSN0897-4756.
Young et al. 1969; Geffner 1969; Jensen 2003 Young, J. A.; Malik, J. G.; Quagliano, J. V.; Danehy, J. P. (1969). "Chemical queries. Especially for introductory chemistry teachers: Do elements in the zinc subgroup belong to the transition series?". Journal of Chemical Education. 46 (4): 227‒229. doi:10.1021/ed046p227. Geffner, Saul L. (1969). "Teaching the transition elements". Journal of Chemical Education. 46 (5): 329. doi:10.1021/ed046p329.4. ISSN0021-9584. Jensen, William B. (2003). "The Place of Zinc, Cadmium, and Mercury in the Periodic Table". Journal of Chemical Education. 80 (8): 952-961. doi:10.1021/ed080p952. ISSN0021-9584.
Merinis, Legoux & Bouissières 1972; Kugler & Keller 1985, pp. 110, 116, 210–211, 224; Takahashi & Otozai 1986; Zuckerman & Hagen 1989, pp. 21–22 (21); Takahashi, Yano & Baba 1992 Merinis J, Legoux G & Bouissières G 1972, "Etude de la formation en phase gazeuse de composés interhalogénés d'astate par thermochromatographie" [Study of the gas-phase formation of interhalogen compounds of astatine by thermochromatography], Radiochemical and Radioanalytical Letters (in French), vol. 11, no. 1, pp. 59–64 Kugler HK & Keller C (eds) 1985, Gmelin Handbook of Inorganic and Organometallic chemistry, 8th ed., 'At, Astatine', system no. 8a, Springer-Verlag, Berlin, ISBN3-540-93516-9 Takahashi, N.; Otozai, K. (1986). "The mechanism of the reaction of elementary astatine with organic solvents". Journal of Radioanalytical and Nuclear Chemistry Letters. 103 (1): 1–9. doi:10.1007/BF02165358. ISSN0236-5731. Zuckerman JJ & Hagen AP 1989, Inorganic Reactions and Methods, the Formation of Bonds to Halogens, John Wiley & Sons, New York, ISBN978-0-471-18656-4 Takahashi N, Yano D & Baba H 1992, "Chemical behavior of astatine molecules", Proceedings of the international conference on evolution in beam applications, Takasaki, Japan, November 5‒8, 1991, pp. 536‒539
Johansen & Mackintosh 1970, pp. 121–4; Divakar, Mohan & Singh 1984, p. 2337; Dávila et al. 2002, p. 035411-3 Johansen G & Mackintosh AR 1970, 'Electronic structure and phase transitions in ytterbium', Solid State Communications, vol. 8, no. 2, pp. 121–4 Divakar, C.; Mohan, Murali; Singh, A. K. (1984-10-15). "The kinetics of pressure-induced fcc-bcc transformation in ytterbium". Journal of Applied Physics. 56 (8): 2337–2340. doi:10.1063/1.334270. ISSN0021-8979. Dávila, M. E.; Molodtsov, S. L.; Laubschat, C.; Asensio, M. C. (2002-07-19). "Structural determination of Yb single-crystal films grown on W(110) using photoelectron diffraction". Physical Review B. 66 (3): 035411–035418. doi:10.1103/PhysRevB.66.035411. ISSN0163-1829.
Hindman 1968, p. 434: 'The high values obtained for the [electrical] resistivity indicate that the metallic properties of neptunium are closer to the semimetals than the true metals. This is also true for other metals in the actinide series.'; Dunlap et al. 1970, pp. 44, 46: '...α-Np is a semimetal, in which covalency effects are believed to also be of importance...For a semimetal having strong covalent bonding, like α-Np...' Hindman JC 1968, 'Neptunium', in CA Hampel (ed.), The encyclopedia of the chemical elements, Reinhold, New York, pp. 432–7 Dunlap, B. D.; Brodsky, M. B.; Shenoy, G. K.; Kalvius, G. M. (1970-01-01). "Hyperfine Interactions and Anisotropic Lattice Vibrations of 237Np in α-Np Metal". Physical Review B. 1 (1): 44–49. doi:10.1103/PhysRevB.1.44. ISSN0556-2805.