@article{10_21136_CPM_1969_117649,
     author = {Kerndl, Jind\v{r}ich},
     title = {Contribution to the affine deformation of surfaces},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {57--69},
     year = {1969},
     volume = {94},
     number = {1},
     doi = {10.21136/CPM.1969.117649},
     mrnumber = {0253190},
     zbl = {0169.52603},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1969.117649/}
}