El-Wassimy, M.T.M.; Joergensen, K.A.; Lawesson S.-O.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1983 , p. 2201 - 2204

El-Wassimy, M.T.M.; Joergensen, K.A.; Lawesson S.-O.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1983 , p. 2201 - 2204

Schoenberg; Schuetz
Justus Liebigs Annalen der Chemie, 1927 , vol. 454, p. 51
Chemische Berichte, 1929 , vol. 62, p. 2333