Silviu, Beciu, Stefania Nistor, Ecaterina Popa Oana, and Iulian Alecu. 2010. “Aspects of Sustainable Rural Development in the Mountain Areas from N-E Region of Romania”. Ekonomika Poljoprivrede 57 (Spec.num.2):33-38. https://ea.bg.ac.rs/index.php/EA/article/view/911.