Zhumagulova, G.; Kocherov, E.; Korganbayev, B.; Ivakhnyuk, G.; Ramatullayeva, L.; Ikramov, I.; Begimbetova, A.; Mamitova, A.; Mutasheva, G. Recycling Waste Cooking Oil into Soap: Physicochemical Characterization and Multivariate Assessment of Experimental Formulations. EQA 2026, 74, 1-15.