Aphids (Hemiptera: Aphididae) on plum and cherry plum in Bulgaria / Pavlin Vasilev, Radoslav Andreev, Hristina Kutinkova .
In: Acta horticulturae et regiotecturae. -- ISSN 1335-2563. -- Roč. 23, č. 1 (2020), s. 12-16
https://sciendo.com/issue/ahr/23/1 .