@article{10_4064_cm_29_1_31_43,
     author = {J\'ozef S{\l}omi\'nski},
     title = {On the greatest congruence relation contained in an equivalence relation and its applications to the algebraic theory of machines},
     journal = {Colloquium Mathematicum},
     pages = {31--43},
     publisher = {mathdoc},
     volume = {29},
     number = {1},
     year = {1974},
     doi = {10.4064/cm-29-1-31-43},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-29-1-31-43/}
}