KÜLEKÇİ, G., and A. O. YILMAZ. “ROADWAY TUNNEL CONSTRUCTION WITH DRILLING-BLASTING METHOD; GÜMÜŞHANE ENVIRONMENT ROAD EXAMPLE”. Ejons International Journal on Mathematic, Engineering and Natural Sciences, vol. 2, no. 4, Oct. 2018, pp. 34-39, https://ejons.org/index.php/ejons/article/view/27.