Chandrasekhar; Venkat Reddy
Tetrahedron, 2000 , vol. 56, # 8 p. 1111 - 1114

Chen, Fei; Ding, Ziyuan; He, Yanmei; Qin, Jie; Wang, Tianli; Fan, Qing-Hua
Tetrahedron, 2012 , vol. 68, # 26 p. 5248 - 5257