@article{BASM_2004_3_a2,
     author = {G. Beliavscaia and A. Diordiev},
     title = {On check character systems over groups},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {17--24},
     publisher = {mathdoc},
     number = {3},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2004_3_a2/}
}