Directive 2014/41/EU on EIOs
Convention on Mutual Assistance in Criminal Matters between the Member States of the European Union established by the Council in accordance with Article 34 of the Treaty on European Union, ratified by a law adopted by the National Assembly of Republic of Bulgaria, promulgated in State Gazette issue 58/2007
Articles 172-176 of Criminal Procedure code
Law of Special Intelligence Means
Law of EIO