Zlatkovskyi, O., A. Shevchenko, and T. Shevchenko. “Use of Fly Ash for Conditioning the Excess Activated Sludge During Deliquefaction at Chamber-Membrane Filter Presses”. Eastern-European Journal of Enterprise Technologies, vol. 3, no. 10 (99), June 2019, pp. 17-23, doi:10.15587/1729-4061.2019.170200.