Slanev, K. and Enchev, S. (2014) “Influence of Variety and Density on Crop Productivity of Sorghum x Sudan Grass Hybrids in Flowering Stage”, Bulgarian Journal of Agricultural Science, 20(1), pp. 182–185. Available at: https://agriacad.eu/ojs/index.php/bjas/article/view/6380 (Accessed: 9 October 2026).