@article{10_14708_cm_v6i1_5474,
     author = {F. Bara\'nski},
     title = {O pewnym zagadnieniu {F.} {Leji} dotycz\k{a}cym sumowania kierunkowego macierzy},
     journal = {Commentationes Mathematicae},
     pages = { 85--89},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {1961},
     doi = {10.14708/cm.v6i1.5474},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v6i1.5474/}
}