@article{10_21136_CMJ_1984_101940,
     author = {Majcher, Zofia and P{\l}onka, Jerzy},
     title = {On a generalization of the matroid},
     journal = {Czechoslovak Mathematical Journal},
     pages = {172--177},
     publisher = {mathdoc},
     volume = {34},
     number = {2},
     year = {1984},
     doi = {10.21136/CMJ.1984.101940},
     mrnumber = {743482},
     zbl = {0551.05031},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1984.101940/}
}