“The Use of Natural Montmorillonite Clays in the Process of Coagulation Purification of Laundry Wastewater”. Sorbtsionnye I Khromatograficheskie Protsessy, vol. 20, no. 6, Jan. 2021, pp. 773-81, https://doi.org/10.17308/sorpchrom.2020.20/3057.