@article{DA_2013_20_3_a2,
     author = {V. G. Sargsyan},
     title = {On the maximum cardinality of a~$k$-zero-free set in an {Abelian} group},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {45--64},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2013_20_3_a2/}
}