@article{AUCMP_1986_27_2_a3,
     author = {\v{C}uda, Karel},
     title = {Some remarks to the axiom of prolongation},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {19--21},
     year = {1986},
     volume = {27},
     number = {2},
     mrnumber = {0878623},
     zbl = {0624.03040},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_1986_27_2_a3/}
}