@article{10_4064_fm_41_1_137_145,
     author = {Casimir Zarankiewicz},
     title = {On a problem of {P.} {Turan} concerning graphs},
     journal = {Fundamenta Mathematicae},
     pages = {137--145},
     publisher = {mathdoc},
     volume = {41},
     number = {1},
     year = {1955},
     doi = {10.4064/fm-41-1-137-145},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-41-1-137-145/}
}