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@article{MM2_1995__87_4_156088, author = {A. Sz\"ucs and B. Csik\'os}, title = {On the number of triple points of an immersed surface with boundary.}, journal = {Manuscripta mathematica}, pages = {285--294}, publisher = {mathdoc}, volume = {87}, number = {4}, year = {1995}, zbl = {0856.57028}, url = {http://geodesic.mathdoc.fr/item/MM2_1995__87_4_156088/} }
A. Szücs; B. Csikós. On the number of triple points of an immersed surface with boundary.. Manuscripta mathematica, Tome 87 (1995) no. 4, pp. 285-294. http://geodesic.mathdoc.fr/item/MM2_1995__87_4_156088/