Effect of van der Waals interactions on H2 dissociation on clean and defected Ru(0001) surfaceMikko Puisto, Heli Nenonen, Antti Puisto and Matti AlataloEur. Phys. J. B, 86 9 (2013) 396DOI: https://doi.org/10.1140/epjb/e2013-40564-6