TY  - JOUR 
T1  - Revision of the neotropical cichlid genus Gymnogeophagus Ribeiro, 1918, with descriptions of two new species (Pisces, Perciformes)
JO  - Revista Brasileira de Zoologia
A1  - Reis, R. E.
A1  - Malabarba, L. R.
SN  - 0101-8175
UL  - 10.1590/S0101-81751987000400002
VL  - 4 
Y1  - 1987
PB  - Brasil 
ER  -