Improvement of the elements of chemical protection of spruce trees against spruce bud scales (Hemiptera: Coccidae: Physokermes) in ornamental plants’ arboreta in the Kharkiv Region. (2019). The Kharkov Entomological Society Gazette, 27(2), 43-48. https://doi.org/10.36016/KhESG-2019-27-2-5