Disentangling urban wastewater sources using isotopic tracers and CEC-based diagnostic indicators. - Matiatos, Ioannis; Amaxidis, George; Lagogiannis, Sergios; Zotou, Ioanna; Vystavna, Yuliya; McGuire, Bradley; Harjung, Astrid; Papadopoulos, Anastasios; Lazogiannis, Konstantinos; Heidelsheidt, Elisangela; Rossi, Pekka M.; Dimitriou, Elias (Environmental Research, 2026)