TY - JOUR AU - Andrzej Walendziak AU - Magdalena Wojciechowska-Rysiawa TI - Some characterizations of pseudo-BL-chains JO - Commentationes Mathematicae PY - 2011 SP - 121 EP - 124 VL - 51 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/cm.v51i2.5314/ DO - 10.14708/cm.v51i2.5314 LA - pl ID - 10_14708_cm_v51i2_5314 ER -