Orlovic, Mirko; Kronja, Olga; Humski, Kresimir; Borcic, Stanko; Polla, Eugenio
Journal of Organic Chemistry, 1986 , vol. 51, # 17 p. 3253 - 3256

Seto, Hideharu; Qian, Zhao-hui; Yoshioka, Hirosuke; Uchibori, Yukitaka; Umeno, Masayuki
Chemistry Letters, 1991 , p. 1185 - 1188