Benati, Luisa; Montevecchi, P. Carlo; Spagnolo, Piero
Gazzetta Chimica Italiana, 1992 , vol. 122, # 5-7 p. 249 - 251

Fouli, Fouli Abd El-Rahim; Shaban, Mohamed El-Badry; El-Nagdy, El-Sayed Ibrahim; Youssef, Ahmed Said Ahmed
Acta Chimica Hungarica, 1988 , vol. 125, # 6 p. 785 - 792