@article{10_21136_CPM_1968_117628,
     author = {Charv\'at, Franti\v{s}ek},
     title = {K problematice roz\v{s}i\v{r}ov\'an{\'\i} line\'arn{\'\i}ch operac{\'\i} na modulech},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {371--377},
     publisher = {mathdoc},
     volume = {093},
     number = {4},
     year = {1968},
     doi = {10.21136/CPM.1968.117628},
     mrnumber = {0254556},
     zbl = {0169.16502},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1968.117628/}
}