参考文献

Echevarria, Aurea; Elguero, Jose; Yranzo, Gloria I.; Diez-Bara, Enrique; Hoz, Antonio de la; et al. Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1993 , # 18 p. 2229 - 2232