Difference equations and inequalities : theory, methods, and applications 2026-02-15T20:26:54+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Agarwal, Ravi P. (Monographs and textbooks in pure and applied mathematics ;, 2000)