Kikugawa, Yasuo; Tsuji, Chiho; Miyazawa, Etsuko; Sakamoto, Takeshi
Tetrahedron Letters, 2001 , vol. 42, # 12 p. 2337 - 2339

Alemagna, Andreina; Baldoli, Clara; Buttero, Paola Del; Licandro, Emanuela; Maiorana, Stefano
Synthesis, 1987 , # 2 p. 192 - 196