@article{articleba0ac2c4,
title   = {Role of opioidergic and GABAergic neurotransmission of the nucleus raphe magnus in the modulation of tonic immobility in guinea pigs},
author = {Silva, Luis Felipe Souza da and Menescal-de-Oliveira, Leda},
year = {2007},
doi = {10.1016/j.brainresbull.2006.12.005},
journal   = {Brain Research Bulletin}
}