Cremlyn, Richard; Swinbourne, Frederick; Atherall, John; Courtney, Lynn; Cronje, Theo; at al.
Phosphorus and Sulfur and the Related Elements, 1980 , vol. 9, p. 155 - 164
Brownsort, Peter A.; Paton, Michael
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1987 , p. 2339 - 2344
Ryabukhin,Yu.I. et al.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1975 , vol. 11, p. 404 - 407
Khimiya Geterotsiklicheskikh Soedinenii, 1975 , vol. 11, p. 460 - 464
Cremlyn, Richard; Swinbourne, Frederick; Atherall, John; Courtney, Lynn; Cronje, Theo; at al.
Phosphorus and Sulfur and the Related Elements, 1980 , vol. 9, p. 155 - 164