@article{10_21136_CMJ_1983_101893,
     author = {Jezn\'y, Samuel and Trenkler, Mari\'an},
     title = {Characterization of magic graphs},
     journal = {Czechoslovak Mathematical Journal},
     pages = {435--438},
     publisher = {mathdoc},
     volume = {33},
     number = {3},
     year = {1983},
     doi = {10.21136/CMJ.1983.101893},
     mrnumber = {718926},
     zbl = {0571.05030},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1983.101893/}
}