Forest decline in Ukraine [Text] / V. Meshkova, I. Ustskiy //
XI Forest World Congress, Antala, October 13-22, 1997. - 1997. - Vol. 1: Forest and tree resources, Issue 5 : Protecting forests against pests and diseases, air pollution and decline. - P. 196. Доп. точки доступа: Ustskiy, I.