TY - JOUR AU - P. C. Wong AU - K. B. Wong TI - Subgroup Separability and Conjugacy Separability of Certain HNN Extensions JO - Bulletin of the Malaysian Mathematical Society PY - 2008 VL - 31 IS - 1 UR - http://geodesic.mathdoc.fr/item/BMMS_2008_31_1_a2/ ID - BMMS_2008_31_1_a2 ER -