Analysis of financial time series 2026-02-15T21:53:07+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Tsay, Ruey S., 1951 (Wiley series in probability and statistics, 2005)