Pukhnarevich; Koval'skaya; Ushakova; Tsykhanskaya; Kopylova; Voronkov
Russian Journal of General Chemistry, 1996 , vol. 66, # 8 p. 1257 - 1259

Frankel, M.; Gertner, D.; Wagner, D.; Zilkha, A.
Journal of Organometallic Chemistry, 1967 , vol. 9, p. 83 - 88