Drabowicz, Jozef; Lyzwa, Piotr; Mikolajczyk, Marian
Synthesis, 1981 , # 11 p. 890 - 891

Vlasova, Olga G.; Rakitin, Oleg A.; Khmelnitski, Lenor I.
Organic Preparations and Procedures International, 1994 , vol. 26, # 3 p. 331 - 336