MACDONALD, Matthew R.; BATES, Jefferson E.; FIESER, Megan E. Expanding Rare-Earth Oxidation State Chemistry to Molecular Complexes of Holmium(II) and Erbium(II). Journal of the American Chemical Society. 2012-05-23, roč. 134, čís. 20, s. 8420–8423. Dostupné online [cit. 2026-09-11]. ISSN0002-7863. doi:10.1021/ja303357w. (anglicky)
MACDONALD, Matthew R.; BATES, Jefferson E.; FIESER, Megan E. Expanding Rare-Earth Oxidation State Chemistry to Molecular Complexes of Holmium(II) and Erbium(II). Journal of the American Chemical Society. 2012-05-23, roč. 134, čís. 20, s. 8420–8423. Dostupné online [cit. 2026-09-11]. ISSN0002-7863. doi:10.1021/ja303357w. (anglicky)
DESURVIRE, E.; SIMPSON, J. R.; BECKER, P. C. High-gain erbium-doped traveling-wave fiber amplifier. Optics Letters. 1987-11-01, roč. 12, čís. 11, s. 888. Dostupné online [cit. 2026-09-09]. ISSN0146-9592. doi:10.1364/OL.12.000888. (anglicky)
MACDONALD, Matthew R.; BATES, Jefferson E.; FIESER, Megan E. Expanding Rare-Earth Oxidation State Chemistry to Molecular Complexes of Holmium(II) and Erbium(II). Journal of the American Chemical Society. 2012-05-23, roč. 134, čís. 20, s. 8420–8423. Dostupné online [cit. 2026-09-11]. ISSN0002-7863. doi:10.1021/ja303357w. (anglicky)
DESURVIRE, E.; SIMPSON, J. R.; BECKER, P. C. High-gain erbium-doped traveling-wave fiber amplifier. Optics Letters. 1987-11-01, roč. 12, čís. 11, s. 888. Dostupné online [cit. 2026-09-09]. ISSN0146-9592. doi:10.1364/OL.12.000888. (anglicky)