Preparation and Rietveld refinement of Ag-exchanged clinoptiloliteDimova, L.; Petrov, O.; Kadiyski, M.; Lihareva, N.; Stoyanova-Ivanova, Angelina; Mikli, ValdekClay minerals2011 / p. 205-212 https://www.researchgate.net/publication/262909805_Preparation_and_Rietveld_refinement_of_Ag-exchanged_clinoptilolite