%0 Journal Article %A Švec, Alois %T On infinitesimal isometries of surfaces in $E^4$ %J Czechoslovak Mathematical Journal %D 1976 %P 628-631 %V 26 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1976.101433/ %R 10.21136/CMJ.1976.101433 %G en %F 10_21136_CMJ_1976_101433