N. P. Dikii, A. N. Dovbnya, Yu. V. Lyashko, D. V. Medvedev, E. P. Medvedeva, V. L. Uvarov, K. V. Achkasov, “Diffusion of sodium, potassium, calcium, manganese, and radon in tuff and clinoptilolite under leaching”, Zhurnal Tekhnicheskoi Fiziki, 81:7 (2011), 120–123; Tech. Phys., 56:7 (2011), 1018–1022
