@article{10_21136_CMJ_1975_101322,
     author = {Chajda, Ivan},
     title = {Systems of equations and tolerance relations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {302--308},
     publisher = {mathdoc},
     volume = {25},
     number = {2},
     year = {1975},
     doi = {10.21136/CMJ.1975.101322},
     mrnumber = {0369211},
     zbl = {0312.08006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1975.101322/}
}