%0 Journal Article %A Z. A. Skopets %T An oblique mapping of a third-order surface with a double point onto the plane %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1964 %P 117-121 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1964_1_a14/ %G ru %F IVM_1964_1_a14