TY - JOUR AU - Bican, Ladislav TI - Non-singular covers over monoid rings JO - Mathematica Bohemica PY - 2008 SP - 9 EP - 17 VL - 133 IS - 1 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/articles/10.21136/MB.2008.133940/ DO - 10.21136/MB.2008.133940 LA - en ID - 10_21136_MB_2008_133940 ER -