L.  Pang, Miao, Y., Bhange, S. N., Barras, A., Addad, A., Roussel, P., Amin, M. A., Kurungot, S., Szunerits, S., and Boukherroub, R., ?Enhanced electrocatalytic activity of PtRu/nitrogen and sulphur co-doped crumbled graphene in acid and alkaline media?, Journal of Colloid and Interface Science, vol. 590, pp. 154-163, 2021.