E. Hatzigiannakis, N. Kantiranis, E. Tziritis, A. Filippidis, G. Arampatzis, and E. Tzamos, “THE USE OF HEU-TYPE ZEOLITIC TUFF IN SUSTAINABLE AGRICULTURE: EXPERIMENTAL STUDY ON THE DECREASE OF NITRATE LOAD IN VADOSE ZONE LEACHATES”, geosociety, vol. 50, no. 4, pp. 2145–2154, Jul. 2016.