Nguyen, Thanh Binh; Ermolenko, Ludmila; Al-Mourabit, Ali
Heterocycles, 2012 , vol. 86, # 1 p. 555 - 563

Rossi; Pini
Tetrahedron, 1996 , vol. 52, # 23 p. 7939 - 7946

Borovikova, G. S.; Tsymbal, I. F.; Levchenko, E. S.; Borovik, E. I.
Journal of Organic Chemistry USSR (English Translation), 1984 , p. 1626 - 1631
Zhurnal Organicheskoi Khimii, 1984 , vol. 20, # 8 p. 1784 - 1790

Derkach,G.I.; Kolotilo,M.V.
J. Gen. Chem. USSR (Engl. Transl.), 1966 , vol. 36, p. 82 - 84,85 - 87