@article{10_1017_S0017089500006182,
     author = {Roth, K. F.},
     title = {On a theorem of {Beck}},
     journal = {Glasgow mathematical journal},
     pages = {195--201},
     year = {1985},
     volume = {26},
     doi = {10.1017/S0017089500006182},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500006182/}
}