@article{10_21136_CPM_1976_117906,
     author = {Chajda, Ivan},
     title = {A construction of tolerances on modular lattices},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {195--198},
     year = {1976},
     volume = {101},
     number = {2},
     doi = {10.21136/CPM.1976.117906},
     mrnumber = {0450155},
     zbl = {0343.06007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1976.117906/}
}