@article{10_21136_CPM_1972_117775,
     author = {\v{C}ul{\'\i}k, Karel and Vrba, Anton{\'\i}n},
     title = {On the number of initial segments of a finite set of sequences (finite language)},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {389--398},
     publisher = {mathdoc},
     volume = {097},
     number = {4},
     year = {1972},
     doi = {10.21136/CPM.1972.117775},
     mrnumber = {0341934},
     zbl = {0254.94055},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1972.117775/}
}