Sisák, I., J. Busznyák, M. Kocsis, and A. Benő. “Soil-Related Map Servers in Hungary and Their Role in the Development of Knowledge-Intensive Services”. Review on Agriculture and Rural Development, vol. 3, no. 1, Jan. 2014, pp. 244-9, https://iskolakultura.hu/index.php/rard/article/view/13430.