2013 · Albert Kopali, V. Peçuli, et al. · Fourth International Scientific Symposium "Agrosym 2013", Jahorina, Bosnia and Herzegovina, 3-6 October, 2013. Book of Proceedings.
2013 · Albert Kopali, Zydi Teqja, et al. · Fourth International Scientific Symposium "Agrosym 2013", Jahorina, Bosnia and Herzegovina, 3-6 October, 2013. Book of Proceedings.