Daukshas, V. K.; Martinkus, R. S.; Kuleshyus, V. A.; Shtel'bene, V. P.
Journal of Organic Chemistry USSR (English Translation), 1983 , vol. 19, p. 458 - 463
Zhurnal Organicheskoi Khimii, 1983 , vol. 19, # 3 p. 522 - 528

Daukshas, V. K.; Martinkus, R. S.; Kuleshyus, V. A.
Journal of Organic Chemistry USSR (English Translation), 1984 , vol. 20, p. 465 - 467
Zhurnal Organicheskoi Khimii, 1984 , vol. 20, # 3 p. 516 - 518

Majima; Okazaki
Chemische Berichte, 1916 , vol. 49, p. 1490

Sanchez, Ignacio H.; Larraza, Maria Isabel; Basurto, Fernando; Yanez, Ricardo; Avila, Salvador; et al.
Tetrahedron, 1985 , vol. 41, # 12 p. 2355 - 2359