@article{GDZPPN002064928,
title = {Poincar\'e duality groups of dimension two, II.},
journal = {Commentarii mathematici Helvetici},
volume = {58},
year = {1983},
pages = {111-114},
zbl = {0518.57003},
url = {http://dml.mathdoc.fr/item/GDZPPN002064928}
}
Eckmann, Beno; Linnell, Peter. Poincaré duality groups of dimension two, II.. Commentarii mathematici Helvetici, Tome 58 (1983) pp. 111-114. http://gdmltest.u-ga.fr/item/GDZPPN002064928/