Lunstedt, Torbjoern; Carlson, Rolf; Shabana, Rashad
Acta Chemica Scandinavica, Series B: Organic Chemistry and Biochemistry, 1987 , vol. 41, # 3 p. 157 - 163

Sun, Yadong; Jiang, Huanfeng; Wu, Wanqing; Zeng, Wei; Li, Jianxiao
Organic and Biomolecular Chemistry, 2014 , vol. 12, # 4 p. 700 - 707