Телепенько, Ю. Ю. “Frost-Resistance of the Blackberry (<i>Rubus</i> Subg. <i>Eubatus</i≫ Focke) Cultivars in the Forest-Steppe Zone of Ukraine”. Plant Varieties Studying and Protection, vol. 14, no. 1, Mar. 2018, pp. 124-31, doi:10.21498/2518-1017.14.1.2018.126521.