G. I. Melikadze, P. Malik, S. G. Vepkhvadze, M. S. Todadze, L. E. Ghlonti, and T. G. Chikadze, “Using Stable Isotopes for Karstic Water Origin Assessment in Georgian Caucasus Mts”., GGS, vol. 22, no. 2, Jan. 2020.