Bulgaria ·Ilko Stoyanov and Kristina Chakarova journal article Ilko Stoyanov, Kristina Chakarova European State Aid Law Quarterly, Volume 19 (2020), Issue 4, Page 521 - 522
Bulgaria ∙ Iveta Stoycheva journal article Iveta Stoycheva European State Aid Law Quarterly, Volume 16 (2017), Issue 3, Page 505 - 507