TY - JOUR AU - Y. Touail TI - Set-valued mappings: fixed point results with $\beta$-function and some applications JO - Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta PY - 2024 SP - 61 EP - 79 VL - 63 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IIMI_2024_63_a4/ LA - en ID - IIMI_2024_63_a4 ER -