Nikolova, Ivelina, and Natalia Georgieva. “Systems of Organic Farming in Spring Vetch I: Biological Response of Sucking Insect Pests”. Pesticides and Phytomedicine / Pesticidi i fitomedicina 30, no. 2 (July 13, 2015). Accessed February 3, 2026. https://www.aseestant.ceon.rs/index.php/pif/article/view/7698.