@article{10_4153_CMB_1975_133_1,
     author = {Macedonska-Nosalska, O. N.},
     title = {On {Two} {Problems} {Concerning} {Neutral} {Polyverbal} {Operations} on {Groups}},
     journal = {Canadian mathematical bulletin},
     pages = {763--765},
     year = {1975},
     volume = {18},
     number = {5},
     doi = {10.4153/CMB-1975-133-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-133-1/}
}