Le Baut; Sparfel; Clairc; et al.
European Journal of Medicinal Chemistry, 1983 , vol. 18, # 5 p. 447 - 455

Makin, S. M.; Dobretsova, E. K.; Shavrygina, O. A.; Arshava, B. M.
Journal of Organic Chemistry USSR (English Translation), 1987 , vol. 23, p. 445 - 448
Zhurnal Organicheskoi Khimii, 1987 , vol. 23, # 3 p. 494 - 498

Makin, S. M.; Dobretsova, E. K.; Shavrygina, O. A.; Arshava, B. M.
Journal of Organic Chemistry USSR (English Translation), 1987 , vol. 23, p. 445 - 448
Zhurnal Organicheskoi Khimii, 1987 , vol. 23, # 3 p. 494 - 498

Le Baut; Sparfel; Clairc; et al.
European Journal of Medicinal Chemistry, 1983 , vol. 18, # 5 p. 447 - 455