Deli, O. F., Odessa I.I. Mechnikov National University, Dvoryanska Str., 2, Odesa, 65082, Ukraine, Ukraine

• Visnyk of V. N. Karazin Kharkiv National University series «Еcоlogy» No. 23 (2020): Visnyk of V. N. Karazin Kharkiv National University series «Еcоlogy» - Biological Research
  Results of Standardized Beekeeper Survey of Honey Bee Colony Losses in Ukraine for Winter 2018-2019
  Abstract  pdf (Українська)
• Visnyk of V. N. Karazin Kharkiv National University series «Еcоlogy» No. 25 (2021): Visnyk of V. N. Karazin Kharkiv National University series «Еcоlogy» - Biological Research
  Results of Annual Monitoring of Honey Bee Colony Winter Losses in Ukraine: Winter 2019–2020
  Abstract  pdf (Українська)