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@article{CMH_1984__59_139969, author = {N. Habegger and V. Jones and O.P. Ortiz}, title = {Relative cohomolgy of groups.}, journal = {Commentarii mathematici Helvetici}, pages = {149--164}, publisher = {mathdoc}, volume = {59}, year = {1984}, zbl = {0544.20047}, url = {http://geodesic.mathdoc.fr/item/CMH_1984__59_139969/} }
N. Habegger; V. Jones; O.P. Ortiz. Relative cohomolgy of groups.. Commentarii mathematici Helvetici, Tome 59 (1984), pp. 149-164. http://geodesic.mathdoc.fr/item/CMH_1984__59_139969/