March, P. de; Moreno-Manas, M.; Casado, J.; Pleixats, R.; Roca, J. L.; Trius, A.
Journal of Heterocyclic Chemistry, 1984 , vol. 21, # 1 p. 85 - 89

Moreno-Manas, Marcial; Pleixats, Roser
Synthesis, 1984 , # 5 p. 430 - 431