TY - JOUR AU - P. C. Wong AU - C. K. Tang AU - H. W. Gan TI - Weak Potency of Fundamental Groups of Graphs of Groups JO - Bulletin of the Malaysian Mathematical Society PY - 2010 VL - 33 IS - 2 UR - http://geodesic.mathdoc.fr/item/BMMS_2010_33_2_a7/ ID - BMMS_2010_33_2_a7 ER -