Vrbkova, Silvie; Dracinsky, Martin; Holy, Antonin
Tetrahedron Asymmetry, 2007 , vol. 18, # 18 p. 2233 - 2247

Rao, A. V. Rama; Reddy, K. L. N.; Reddy, K. Ashok
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1993 , vol. 32, # 12 p. 1203 - 1208