KOVÁCS L, VÁRADI S. APPROXIMATE CALCULATION OF PRESSURE DROP IN BENDS BUILT IN PNEUMATIC CONVEYING PIPES IN THE CASE OF HIGH DENSITY CONVEYING Period. Polytech. Mech. Eng. [Internet]. 1993 Jan. 1 [cited 2024 May 19];37(1):29-44. Available from: https://pp.bme.hu/me/article/view/5535