“TECHNOLOGICAL OPPORTUNITIES SURVEY OF FOREST SHORT ROTATION PLANTATIONS IN BULGARIA FOR ENERGY BIOMASS PRODUCTION* PART 2: TECHNOLOGY STAGES OF CREATION AND CULTIVATION OF WOOD BIOMASS PLANTATIONS”. Innovation in Woodworking Industry and Engineering design 2, no. 1 (May 15, 2013). Accessed February 25, 2026. http://innojs.ltu.bg/index.php/scjournal-inno/article/view/88.