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@article{PORMA_1977__36_1_115299, author = {Yahya, Q.A.M.M.}, title = {Fermat's last theorem - a topological verification}, journal = {Portugaliae mathematica}, pages = {25--31}, publisher = {mathdoc}, volume = {36}, number = {1}, year = {1977}, mrnumber = {0535220}, zbl = {0414.10006}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1977__36_1_115299/} }
Yahya, Q.A.M.M. Fermat's last theorem - a topological verification. Portugaliae mathematica, Tome 36 (1977) no. 1, pp. 25-31. http://geodesic.mathdoc.fr/item/PORMA_1977__36_1_115299/