Abdullah, J.M. and Al Hayat, N.Q.M. 2014. Calculation of stable operation of vortex spray countercurrent mass exchange device (VSCMED) depending on hydrodynamic characteristics of gas-drop flow. Technology audit and production reserves. 4, 1(18) (Jul. 2014), 53–56. DOI:https://doi.org/10.15587/2312-8372.2014.26316.