Singular optimal control : the linear-quadratic problem 2026-02-15T10:58:29+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Clements, David J.; Anderson, Brian D. O (Lecture notes in control and information sciences, 1978)