Nishi, Takahide; Morisawa, Yasuhiro; Iijima, Yasuteru; Koike, Hiroyuki; Yabe, Yuichiro
Journal of the Chemical Society, Chemical Communications, 1990 , # 23 p. 1672 - 1673

Valenta, Vladimir; Holubek, Jiri; Svatek, Emil; Miller, Vladimir; Vlkova, Marie; Protiva, Miroslav
Collection of Czechoslovak Chemical Communications, 1987 , vol. 52, # 10 p. 2534 - 2544