@article{10_21136_MB_1991_126032,
     author = {\v{S}\'andorov\'a, \v{L}ubica and Trenkler, Mari\'an},
     title = {On a generalization of perfect $b$-matching},
     journal = {Mathematica Bohemica},
     pages = {380--384},
     publisher = {mathdoc},
     volume = {116},
     number = {4},
     year = {1991},
     doi = {10.21136/MB.1991.126032},
     mrnumber = {1146395},
     zbl = {0735.68068},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.1991.126032/}
}