@article{10_4064_cm_46_1_131_134,
     author = {J. P{\l}onka},
     title = {On {\ensuremath{\Gamma}-regular} graphs},
     journal = {Colloquium Mathematicum},
     pages = {131--134},
     publisher = {mathdoc},
     volume = {46},
     number = {1},
     year = {1982},
     doi = {10.4064/cm-46-1-131-134},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-46-1-131-134/}
}