TY - JOUR AU - James Renshaw TI - On subrings of amalgamated free products of rings JO - Colloquium Mathematicum PY - 1999 SP - 241 EP - 248 VL - 79 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-79-2-241-248/ DO - 10.4064/cm-79-2-241-248 LA - en ID - 10_4064_cm_79_2_241_248 ER -