Bölkény, Ildi, Marianna Vadászi, and Ammar Saliby. 2023. “Permeability Measurement Theory in Case of Natural Gas and Natural Gas-Hydrogen Mixture”. Analecta Technica Szegedinensia 17 (4):61-68. https://doi.org/10.14232/analecta.2023.4.61-68.