Sasongko, M.N., Perdana, F. and Wijayanti, W. 2021. Analysis of the effect of ionic conductivity of electrolyte materials on the solid oxide fuel cell performance . Eastern-European Journal of Enterprise Technologies. 3, 6 (111) (Jun. 2021), 41–52. DOI:https://doi.org/10.15587/1729-4061.2021.227230.