%0 Journal Article %A Yu. G. Prokhorov %T On general elephant problem for three-dimensional $\mathbf{Q}$-Fano fiber spaces over a surface %J Fundamentalʹnaâ i prikladnaâ matematika %D 1995 %P 263-280 %V 1 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_1995_1_1_a14/ %G ru %F FPM_1995_1_1_a14