961Bulgaria - Crisis and transition to a market economy (Vol. 1 of 2) : Volume onePre-2003 Economic or Sector Report · January 22, 1991
962International Bank for Reconstruction and Development (IBRD) Board of Governors resolution ; no. 441 : membership of the People's Republic of BulgariaBoard Report · September 24, 1990
963National accounts statistics and exchange rates for BulgariaStaff Working Paper · November 29, 1985