@article{10_21136_CMJ_1988_102246,
     author = {\v{S}vec, Alois},
     title = {On the {Pick} invariant},
     journal = {Czechoslovak Mathematical Journal},
     pages = {493--497},
     year = {1988},
     volume = {38},
     number = {3},
     doi = {10.21136/CMJ.1988.102246},
     mrnumber = {950304},
     zbl = {0669.53011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1988.102246/}
}