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. jmsi [Internet]. 2025 Mar. 18 [cited 2025 Jun. 12];4(2):40-6. Available from: https://ijmri.de/index.php/jmsi/article/view/65