Holy; Ludzisa; Votruba; et al.
Collection of Czechoslovak Chemical Communications, 1985 , vol. 50, # 2 p. 393 - 417

Felczak, Krzysztof; Drabikowska, Alicja K.; Vilpo, Juhani A.; Kulikowski, Tadeusz; Shugar, David
Journal of Medicinal Chemistry, 1996 , vol. 39, # 8 p. 1720 - 1728