TY - JOUR AU - A. A. Utkin TI - A geometric condition for a~triple of curves in a~three-dimensional projective space to belong to a~normcurve JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1989 SP - 82 EP - 84 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1989_5_a16/ LA - ru ID - IVM_1989_5_a16 ER -