Panferov Anatoliy Dmitrievich RussiaSaratovSaratov State University, 410012, Russia, Saratov, Astrakhanskaya street, 83зам. начальника ПРЦНИТpanferovad@info.sgu.ru Author's articles Low-density Approximation in the Theory of Creation the Electron-positron Plasma from Vacuum in Strong Laser Fields