@article{10_21136_CPM_1969_117648,
     author = {Kerndl, Jind\v{r}ich},
     title = {Deformation of surfaces immersed in unimodular affine space of four dimensions},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {43--56},
     publisher = {mathdoc},
     volume = {094},
     number = {1},
     year = {1969},
     doi = {10.21136/CPM.1969.117648},
     mrnumber = {0253189},
     zbl = {0169.52602},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1969.117648/}
}