GANCZAREK-GAMROT, Alicja and STAWICKI, Józef. Comparison of Certain Dynamic Estimation Methods of Value at Risk on Polish Gas Market. Dynamic Econometric Models. Online. 21 December 2017. Vol. 17, no. 1, pp. 81-96. [Accessed 6 July 2025]. DOI 10.12775/DEM.2017.005.