Low coverage surface diffusion in complex, periodic energy landscapes. Part II: Analytical solution for systems with asymmetric hops / M. A. Gosalvez, M. M. Otrokov, N. Ferrando [et.al.] // Physical Review B. 2016. Vol. 93, № 20. P. 205416-1-205416-21. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000553911