V. Sorogovets, R. Markevich, V. Martsul’, E. Sapon, and S. Lukashevich, “THE INFLUENCE OF THE WAY OF SEWAGE SLUDGE TREATMENT ON AMMONIUM NITROGEN CONTENT IN THE RETURN WASTEWATER FLOW”, WPT STN, vol. 33, no. 2, pp. 3–8, May 2023.