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@article{JRAM_1981__324_152351, author = {James Howie}, title = {On pairs of 2-complexes and systems of equations over groups.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {165--174}, publisher = {mathdoc}, volume = {324}, year = {1981}, zbl = {0447.20032}, url = {http://geodesic.mathdoc.fr/item/JRAM_1981__324_152351/} }
James Howie. On pairs of 2-complexes and systems of equations over groups.. Journal für die reine und angewandte Mathematik, Tome 324 (1981), pp. 165-174. http://geodesic.mathdoc.fr/item/JRAM_1981__324_152351/