Dihydroxydiperidatonickelate(Ⅳ) Complex Ion in Alkaline Medium. May 2000 [3 June 2016]. (原始内容存档于2019-01-23). Dengel, Andrew C.; El-Hendawy, Ahmed M.; Griffith, William
Thomas D., The fool on the bridge: 'Can vei la lauzeta mover' stanza 5, Medium Ævum, 1979, 48 (2), doi:10.2307/43631371 . Holbrook, Richard Thayer, Chapter