@article{GDZPPN002198436,
title = {On pairs of 2-complexes and systems of equations over groups.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {329},
year = {1981},
pages = {165-174},
zbl = {0447.20032},
url = {http://dml.mathdoc.fr/item/GDZPPN002198436}
}
Howie, James. On pairs of 2-complexes and systems of equations over groups.. Journal für die reine und angewandte Mathematik, Tome 329 (1981) pp. 165-174. http://gdmltest.u-ga.fr/item/GDZPPN002198436/