• List of Bulgarian football transfers winter 2022–23
    Retrieved 16 January 2023. ""Етър ВТ" се разделя с нападателя Борислав Трендафилов". borbabg.com (in Bulgarian). 25 November 2022. Retrieved 5 January 2023...
    124 KB (4,648 words) - 15:53, 3 March 2024
  • List of Bulgarian football transfers summer 2022
    Bulgarian). Retrieved 11 July 2022. ""Етър" привлече нападателя Борислав Трендафилов". sport-vt.com (in Bulgarian). Retrieved 12 July 2022. ""Етър" взима...
    167 KB (6,064 words) - 21:37, 18 November 2023