TY - JOUR AU - Yu. G. Prokhorov TI - On general elephant problem for three-dimensional $\mathbf{Q}$-Fano fiber spaces over a surface JO - Fundamentalʹnaâ i prikladnaâ matematika PY - 1995 SP - 263 EP - 280 VL - 1 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FPM_1995_1_1_a14/ LA - ru ID - FPM_1995_1_1_a14 ER -