Digital continuous-system simulation 2026-02-15T23:51:54+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Korn, Granino Arthur, 1922; Wait, John V. (Prentice-Hall, 1978)