Barluenga, Jose; Llavona, Lujan; Concellon, Jose M.; Yus, Miguel
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1991 , # 2 p. 297 - 300
Archibald, Sarah C.; Fleming, Ian
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1993 , # 7 p. 751 - 754