CURRENTLY AVAILABLE 4 FORMATS OF AUCTION TRADING (ENGLISH, DUTCH, SEAL FIRST PRICE , VICKRY) WIDELY DISTRIBUTED IN THE WORLD AND THEIR PROS AND CONS IN THEIR MANAGEMENT MECHANISM. ijpse [Internet]. 2025 Mar. 20 [cited 2026 Feb. 23];4(2):23-9. Available from: https://www.ijmri.de/index.php/ijpse/article/view/95