@article{10_21136_CPM_1985_118224,
     author = {Jany\v{s}ka, Josef},
     title = {Geometrical properties of prolongation functors},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {77--86},
     year = {1985},
     volume = {110},
     number = {1},
     doi = {10.21136/CPM.1985.118224},
     mrnumber = {791280},
     zbl = {0582.58002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1985.118224/}
}