Markova E, Teofilova T. Syrphid communitieS (Syrphidae, diptera) in baSic typeS of aGroecoSyStemS in Karlovo valley (bulGaria). BJAS. 2011;17(1):49-54. Accessed October 20, 2026. https://agriacad.eu/ojs/index.php/bjas/article/view/5764