• 2020–21 FC CSKA 1948 Sofia season
    футболист на ЦСКА". cska1948.bg (in Bulgarian). 15 February 2021. "Борислав Дамянов е първото ново попълнение на ЦСКА". cska1948.bg (in Bulgarian). 14 December...
    75 KB (1,292 words) - 22:05, 24 May 2023
  • List of Bulgarian football transfers winter 2020–21
    трима нови". topsport.bg (in Bulgarian). 13 January 2021. "Арда си върна Мартин Костадинов". topsport.bg (in Bulgarian). 7 January 2021. "АРДА подписа с...
    65 KB (2,043 words) - 16:33, 6 February 2023
  • List of Bulgarian football transfers winter 2022–23
    футболисти". sportal.bg (in Bulgarian). Retrieved 25 December 2022. "Ботев и Мартин Атанасов се разделиха". botev-vratsa.com (in Bulgarian). Retrieved 3 February...
    124 KB (4,648 words) - 15:53, 3 March 2024