TY - JOUR AU - Kürbis, Nils TI - A Binary Quantifier for Definite Descriptions in Intuitionist Negative Free Logic: Natural Deduction and Normalisation JO - Bulletin of the Section of Logic PY - 2019 SP - 81 EP - 97 VL - 48 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/BSL_2019_48_2_a0/ LA - en ID - BSL_2019_48_2_a0 ER -