Determination of pH distribution through pH-related properties in deacidified model paperIzabela Vajová, Katarína Vizárová, Radko Tiňo, Nad’a Krivoňáková, Zdenko Takáč and Svetozár KatuščákEur. Phys. J. Plus, 136 5 (2021) 578DOI: https://doi.org/10.1140/epjp/s13360-021-01495-9