@article{GDZPPN002300745, title = {On Exactly Covering Systems of Arithmetic Sequences.}, journal = {Mathematische Annalen}, volume = {180}, year = {1969}, pages = {227-232}, zbl = {0169.37405}, url = {http://dml.mathdoc.fr/item/GDZPPN002300745} }
ZNÁM, S. On Exactly Covering Systems of Arithmetic Sequences.. Mathematische Annalen, Tome 180 (1969) pp. 227-232. http://gdmltest.u-ga.fr/item/GDZPPN002300745/