@article{MASLO_1975__25_4_a2,
     author = {Iwanik, A. and P{\l}onka, J.},
     title = {Linear independence in commutative semigroups},
     journal = {Mathematica slovaca},
     pages = {333--338},
     publisher = {mathdoc},
     volume = {25},
     number = {4},
     year = {1975},
     mrnumber = {0450431},
     zbl = {0335.20031},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1975__25_4_a2/}
}