TY - JOUR AU - V. T. Fomenko TI - Two-dimensional surfaces with flat normal connections in spaces of constant curvature carrying geodesics of constant curvature JO - Matematičeskie zametki PY - 2000 SP - 579 EP - 586 VL - 68 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2000_68_4_a9/ LA - ru ID - MZM_2000_68_4_a9 ER -