Tabern; Volwiler
Journal of the American Chemical Society, 1934 , vol. 56, p. 1139,1142

K'un,C.
J. Gen. Chem. USSR (Engl. Transl.), 1961 , vol. 31, # 5 p. 1554 - 1558,1442 - 1445

Zhang, Ji; Blazecka, Peter G.; Pflum, Derek A.; Bozelak, Joseph; Vrieze, Derek; Colbry, Norman L.; Hoge, Garrett; Boyles, David C.; Samas, Brian; Curran, Timothy T.; Osuma, Augustine T.; Johnson, Paul; Kesten, Suzanne; Schwarz, Jacob B.; Goodman, Annise; Plummer, Mark; Akin, Anne; Huang, Yun; Lovdahl, Michael; Thorpe, Andrew J.
Tetrahedron Letters, 2009 , vol. 50, # 11 p. 1167 - 1170

Kondakowa; Katznelsson
Doklady Akademii Nauk SSSR, 1938 , vol. 18, p. 273
Chem. Zentralbl., 1938 , vol. 109, # I p. 4444