@article{10_14708_cm_v18i2_5828,
     author = {O. Macedo\'nska-Nosalska},
     title = {On the coincidence of verbal products},
     journal = {Commentationes Mathematicae},
     pages = { 273--276},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1975},
     doi = {10.14708/cm.v18i2.5828},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v18i2.5828/}
}