Gugov, D., Todorov, M., Streblau, M. J., & Dimova, T. (2022). Experimental Study of the Characteristic of a PEM Reversible Fuel Cell. ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA, 6(1), 28–33. https://doi.org/10.29114/ajtuv.vol6.iss1.263