1. Bell, C. F., Metal Chelates of Pyridine 2-Aldehyde 2’-Pyridylhydrazone (Paphy and Related Ligands, Rev. lnorg. Chem. 1 [1979] 133/61).
2. Chakrawarti, P. B.; Khanna, P. (J. Indian Chem. Soc. 62 [1985] 20/2).
3. Callejon Mochon, M.; Centeno Gallego, M.; Guiraum Perez, A. (Talanta 33 [1986] 627/30).
4. Aggarwal, R. C.; Singh, N. K.; Singh, R. P. (Inorg. Chim. Acta 32 [1979] L87/L90).
5. Smith, T. D.; Ruzic, I. M.; Tirant, S.; Pilbrow, J. R. (J. Chem. Soc. Dalton Trans. 1982363/72, 371).