%0 Journal Article %A I. B. Zhukov %T Iversen's formula for the second Chern classes of regular surfaces in any characteristic %J Algebra i analiz %D 2007 %P 137-158 %V 19 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_2007_19_5_a5/ %G ru %F AA_2007_19_5_a5