@article{10_21136_CMJ_1992_128357,
     author = {Chajda, Ivan},
     title = {Varieties with modular and distributive lattices of symmetric or reflexive relations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {623--630},
     publisher = {mathdoc},
     volume = {42},
     number = {4},
     year = {1992},
     doi = {10.21136/CMJ.1992.128357},
     mrnumber = {1182194},
     zbl = {0778.08004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1992.128357/}
}