Alcudia Gonzalez, F.; Brunet Romero, E.; Garcia Ruano, J. L.; Rodriguez Ramos, J. H.; Sanchez Alonso, F.
Journal of Chemical Research, Miniprint, 1982 , # 10 p. 2826 - 2850
Kerdesky, Francis A. J.; Holms, James H.; Moore, Jimmie L.; Bell, Randy L.; Dyer, Richard D.; et al.
Journal of Medicinal Chemistry, 1991 , vol. 34, # 7 p. 2158 - 2165