Pawel Król Alberto Gallina Tadeusz Uhl Sewage Influent Estimation in BSM1 Model of Plaszów WWTP. 357-362 2021 IDAACS https://doi.org/10.1109/IDAACS53288.2021.9660888 conf/idaacs/2021 db/conf/idaacs/idaacs2021.html#KrolGU21