TY  - JOUR
AU  - Porubský, Štefan
AU  - Schönheim, Jochanan
TI  - Old and new necessary and sufficient conditions on $(a_i, m_i)$ in order that $n\equiv a_i (\operatorname {mod} m_i)$ be a covering system
JO  - Mathematica slovaca
PY  - 2003
SP  - 341
EP  - 349
VL  - 53
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MASLO_2003__53_4_a2/
LA  - en
ID  - MASLO_2003__53_4_a2
ER  -