TY  - JOUR 
T1  - Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil
JO  - Zoologia (Curitiba)
A1  - Lourenço, Luzia da Silva
A1  - Fernandes, Izaias Médice
A1  - Súarez, Yzel Rondon
SN  - 1984-4670
UL  - 10.1590/S1984-46702012000400003
VL  - 29 
Y1  - 2012
PB  - Brasil 
ER  -