Set valued dynamical systems and economic flow 2026-02-16T03:35:52+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Cherene, Louis J., 1949 (Lecture notes in economics and mathematical systems ;, 1978)