[1]
R. K. Gaginyan, P. G. Davtian, and G. P. Davtian, “THE ECOLOGICAL SITUATION OF THE ARARAT BASIN AND RATIONAL USAGE OF ITS SOIL RESOURCES”, Proc. YSU C: Geol. Geogr. Sci., vol. 40, no. 2 (210), pp. 139–145, May 2006.