@article{10_21136_CPM_1969_108600,
     author = {Bican, Ladislav},
     title = {O jist\'ych grup\'ach matic},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {305--313},
     publisher = {mathdoc},
     volume = {094},
     number = {3},
     year = {1969},
     doi = {10.21136/CPM.1969.108600},
     mrnumber = {0255700},
     zbl = {0239.20060},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1969.108600/}
}