Permeability Variation Models for Unsaturated Coalbed Methane ReservoirsYumin Lv, Zhiping Li, Dazhen Tang, Hao Xu and Xiaozhi ChenOil Gas Sci. Technol. – Rev. IFP Energies nouvelles, 71 3 (2016) 32DOI: https://doi.org/10.2516/ogst/2015014
