@article{10_21136_CPM_1981_108272,
     author = {Niederle, Josef},
     title = {A note on tolerance lattices of finite chains},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {75--78},
     publisher = {mathdoc},
     volume = {106},
     number = {1},
     year = {1981},
     doi = {10.21136/CPM.1981.108272},
     mrnumber = {613709},
     zbl = {0457.06007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1981.108272/}
}