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@article{PORMA_1999__56_4_49027, author = {Phan, T. and Natividade, M.}, title = {Clinic obstructions and clinic cohomological groups.}, journal = {Portugaliae mathematica}, pages = {381--387}, publisher = {mathdoc}, volume = {56}, number = {4}, year = {1999}, zbl = {0978.20024}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1999__56_4_49027/} }
Phan, T.; Natividade, M. Clinic obstructions and clinic cohomological groups.. Portugaliae mathematica, Tome 56 (1999) no. 4, pp. 381-387. http://geodesic.mathdoc.fr/item/PORMA_1999__56_4_49027/