Paunović, P.; Popovski, O.; Stoevska Gogovska, D.; Lefterova, E.; Slavcheva, E.; Dimitrov, A. T. Electrocatalytic Activity of hypo–hyper-D-Electrocatalysts (Me/TiO<sub>2</Sub>/MWCNTs) Based on Co-Ru in Alkaline Hydrogen Electrolyser. Maced. J. Chem. Chem. Eng. 2011, 30, 55-65.