Barluenga, Jose; Bayon, Ana M.; Campos, Pedro; Asensio, Gregorio; Gonzalez-Nunez, Elena; Molina, Yolanda
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1988 , p. 1631 - 1636

Finger
Journal fuer Praktische Chemie (Leipzig), 1909 , vol. <2>79, p. 493

Nayar, Mazhuvadyil R. Gopinathan; Francis, Joseph D.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1983 , vol. <B> 22, # 8 p. 776 - 780