@article{10_21136_MB_1994_126121,
     author = {Bure\v{s}, Jarol{\'\i}m and Ka\v{n}ka, Milo\v{s}},
     title = {Some conditions for a surface in {$Esp 4$} to be a part of the sphere {$Ssp 2$}},
     journal = {Mathematica Bohemica},
     pages = {367--371},
     publisher = {mathdoc},
     volume = {119},
     number = {4},
     year = {1994},
     doi = {10.21136/MB.1994.126121},
     mrnumber = {1316588},
     zbl = {0862.53001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.1994.126121/}
}