@article{10_21136_CMJ_1978_101549,
     author = {Chajda, Ivan},
     title = {Two constructions of compatible relations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {439--444},
     publisher = {mathdoc},
     volume = {28},
     number = {3},
     year = {1978},
     doi = {10.21136/CMJ.1978.101549},
     mrnumber = {0485621},
     zbl = {0399.08003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1978.101549/}
}