Holmberg, Paer; Tedenborg, Lars; Rosqvist, Susanne; Johansson, Anette M.
Bioorganic and Medicinal Chemistry Letters, 2005 , vol. 15, # 3 p. 747 - 750

Luening, Ulrich; Abbass, Michael; Fahrenkrug, Frank
European Journal of Organic Chemistry, 2002 , # 19 p. 3294 - 3303