Fondo de las Naciones Unidas para Actividades en Población, Agencia Canadiense para el Desarrollo Internacional, Centro Latinoamericano de Demografía (CELADE)
Economic Commission for Europe ; prepared in cooperation with the Centre of Demography, University of Latvia, by the team under the supervision of Peteris Zvidrins
prepared in cooperation with Sarmite Mikulioniene and Vlada Stankuniene, Demographic Research Center of the Lithuanian Institute of Philosophy and Sociology, and Statistics Lithuania