TY - JOUR AU - Holá, Ľ. TI - On relations approximated by continuous functions JO - Acta Universitatis Carolinae. Mathematica et Physica PY - 1987 SP - 67 EP - 72 VL - 28 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AUCMP_1987__28_2_a9/ LA - en ID - AUCMP_1987__28_2_a9 ER -