@article{article41dc9eda,
title   = {Anxiolytic effect in the elevated plus - maze of the nmda receptor antagonist ap7 microinjected into the dorsal periaqueductal gray},
author = {Guimarães, Francisco Silveira and Carobrez, A. P. and Aguiar, J C and Graeff, Frederico Guilherme},
year = {1991},
journal   = {Psychopharmacology}
}