AKBAR TABATABAI, S. A., JALALI KESHAVARZ, R. Universal proof theory: Feasible admissibility in intuitionistic modal logics. Annals of Pure and Applied Logic. 2025, 176(2), 103526. ISSN 0168-0072. E-ISSN 1873-2461. Dostupné z: https://doi.org/10.1016/j.apal.2024.103526.