%0 Journal Article %A Kerndl, Jindřich %T Deformation of surfaces immersed in unimodular affine space of four dimensions %J Časopis pro pěstování matematiky %D 1969 %P 43-56 %V 094 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1969.117648/ %R 10.21136/CPM.1969.117648 %G en %F 10_21136_CPM_1969_117648