Khamdamov Anvar Maxmudovich, Ismailov Kozimjon Olimjon ugli and Xudayberdiyev Absalom Abdurasulovich 2022. Study Of The Hydrodynamics Of A Convex-Concave Disc Column. Pioneer: Journal of Advanced Research and Scientific Progress. 1, 6 (Dec. 2022), 135–139.