%0 Journal Article %A A. V. Domrina %A S. Yu. Orevkov %T On four-sheeted polynomial mappings of $\mathbb C^2$. I. The case of an irreducible ramification curve %J Matematičeskie zametki %D 1998 %P 847-862 %V 64 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1998_64_6_a5/ %G ru %F MZM_1998_64_6_a5