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@article{CMH_1986__61_140057, author = {Andr\'as Sz\"ucs}, title = {The linking number of singular maps.}, journal = {Commentarii mathematici Helvetici}, pages = {360--369}, publisher = {mathdoc}, volume = {61}, year = {1986}, zbl = {0602.57021}, url = {http://geodesic.mathdoc.fr/item/CMH_1986__61_140057/} }
András Szücs. The linking number of singular maps.. Commentarii mathematici Helvetici, Tome 61 (1986), pp. 360-369. http://geodesic.mathdoc.fr/item/CMH_1986__61_140057/