Shirini, Farhad; Khaligh, Nader Ghaffari
Journal of the Iranian Chemical Society, 2012 , vol. 9, # 4 p. 495 - 502

Krebs, Roland; Schomburg, Dietmar; Schmutzler, Reinhard
Zeitschrift fuer Naturforschung, Teil B: Anorganische Chemie, Organische Chemie, 1985 , vol. 40, # 2 p. 282 - 287

Epifani, Erbana; Florio, Saverio; Troisi, Luigino
Tetrahedron, 1990 , vol. 46, p. 4031 - 4038