TY - JOUR AU - Phan Đìni Diêu TI - A~language of constructive mathematics involving systems of sets JO - Informatics and Automation PY - 1967 SP - 123 EP - 141 VL - 93 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1967_93_a7/ LA - ru ID - TRSPY_1967_93_a7 ER -