@article{10_21136_CMJ_1976_101433,
     author = {\v{S}vec, Alois},
     title = {On infinitesimal isometries of surfaces in $E^4$},
     journal = {Czechoslovak Mathematical Journal},
     pages = {628--631},
     publisher = {mathdoc},
     volume = {26},
     number = {4},
     year = {1976},
     doi = {10.21136/CMJ.1976.101433},
     mrnumber = {0431052},
     zbl = {0342.53043},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1976.101433/}
}