Silverpoint (English Wikipedia)

Duval, Guicharnaud & Dran 2004. Duval, Alain; Guicharnaud, H; Dran, Jean-Claude (November 2004). "Particle induced X-ray emission: a valuable tool for the analysis of metalpoint". Nuclear Instruments and Methods in Physics Research B. 226 (1–2): 60–74. doi:10.1016/j.nimb.2004.02.020.
Reiche, Radtke & Berger 2006. Reiche, Ina; Radtke, Martin; Berger, Achim (2006). "Spatially resolved synchrotron radiation induced X-ray fluorescence analyses of rare Rembrandt silverpoint drawings". Applied Physics A. 83 (2): 163–173. Bibcode:2006ApPhA..83..169R. doi:10.1007/s00339-006-3505-4. S2CID 98189343.
Reiche, Radtke & Berger 2004. Reiche, Ina; Radtke, Martin; Berger, Achim (2004). "Spatially resolved sychroton-induced X-ray fluorescence analyses of metal point drawings and their mysterious inscription". Spectrochimica Acta Part B. 59 (10–11): 1657–1662. Bibcode:2004AcSpe..59.1657R. doi:10.1016/j.sab.2004.07.023.

harvard.edu (Global: 18^th place; English: 17^th place)

Reiche, Radtke & Berger 2006. Reiche, Ina; Radtke, Martin; Berger, Achim (2006). "Spatially resolved synchrotron radiation induced X-ray fluorescence analyses of rare Rembrandt silverpoint drawings". Applied Physics A. 83 (2): 163–173. Bibcode:2006ApPhA..83..169R. doi:10.1007/s00339-006-3505-4. S2CID 98189343.
Reiche, Radtke & Berger 2004. Reiche, Ina; Radtke, Martin; Berger, Achim (2004). "Spatially resolved sychroton-induced X-ray fluorescence analyses of metal point drawings and their mysterious inscription". Spectrochimica Acta Part B. 59 (10–11): 1657–1662. Bibcode:2004AcSpe..59.1657R. doi:10.1016/j.sab.2004.07.023.

Reiche, Radtke & Berger 2006. Reiche, Ina; Radtke, Martin; Berger, Achim (2006). "Spatially resolved synchrotron radiation induced X-ray fluorescence analyses of rare Rembrandt silverpoint drawings". Applied Physics A. 83 (2): 163–173. Bibcode:2006ApPhA..83..169R. doi:10.1007/s00339-006-3505-4. S2CID 98189343.

Edwards, Robert W. (2012). Jennie V. Cannon: The Untold History of the Carmel and Berkeley Art Colonies, Vol. 1. Oakland, Calif.: East Bay Heritage Project. pp. 298, 493–499, pl.14a. ISBN 978-1-4675-4567-9. An online facsimile of the entire text of Vol. 1 is posted on the Traditional Fine Arts Organization website ("Jennie V. Cannon: The Untold History of the Carmel and Berkeley Art Colonies, vol. One, East Bay Heritage Project, Oakland, 2012; by Robert W. Edwards". Archived from the original on 29 April 2016. Retrieved 7 June 2016.).

Edwards, Robert W. (2012). Jennie V. Cannon: The Untold History of the Carmel and Berkeley Art Colonies, Vol. 1. Oakland, Calif.: East Bay Heritage Project. pp. 298, 493–499, pl.14a. ISBN 978-1-4675-4567-9. An online facsimile of the entire text of Vol. 1 is posted on the Traditional Fine Arts Organization website ("Jennie V. Cannon: The Untold History of the Carmel and Berkeley Art Colonies, vol. One, East Bay Heritage Project, Oakland, 2012; by Robert W. Edwards". Archived from the original on 29 April 2016. Retrieved 7 June 2016.).