TY - JOUR AU - A. Y. Abdelwanis TI - On triple derivations of partially ordered sets JO - Ufa mathematical journal PY - 2019 SP - 108 EP - 114 VL - 11 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/UFA_2019_11_4_a8/ LA - en ID - UFA_2019_11_4_a8 ER -