Martinez, E. M.; Costa-Silva, M.; Neves, R. H.; Oliveira, R. M. F. de; Machado-Silva, J. R. Biological Implications of the Phenotypic Plasticity in the Schistosoma Mansoni - Nectomys Squamipes Model . Rev. Inst. Med. Trop. São Paulo 2008, 50 (4), 229-232.