@article{10_21136_CPM_1989_118368,
     author = {Mikulski, W{\l}odzimierz M.},
     title = {There exists a prolongation functor of infinite order},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {57--59},
     publisher = {mathdoc},
     volume = {114},
     number = {1},
     year = {1989},
     doi = {10.21136/CPM.1989.118368},
     mrnumber = {990118},
     zbl = {0672.58002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1989.118368/}
}