@article{10_4064_cm_8_1_19_21,
     author = {P. Erd\"os and E. Specker},
     title = {On a theorem in the theory of relations and a solution of a problem of {Knaster}},
     journal = {Colloquium Mathematicum},
     pages = {19--21},
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {1961},
     doi = {10.4064/cm-8-1-19-21},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-8-1-19-21/}
}