Momentum-resolved electron dynamics of image-potential states on Cu and Ag surfaces / K. Schubert, A. Damm, U. Höfer [et.al.] // Physical Review B. 2012. Vol. 85, № 20. P. 205431-1-205431-9. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000431678