TY - JOUR AU - Gruszczyński, Rafał AU - Pietruszczak, Andrzej TI - A comparison of two systems of point-free topology JO - Bulletin of the Section of Logic PY - 2018 VL - 47 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/BSL_2018_47_3_a0/ LA - en ID - BSL_2018_47_3_a0 ER -