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Center for Economic Development - New forms of employment. Incidence, specifics of functioning and impact on the labor market

InvestBulgaria Agency (IBA) - Human resources potential in Bulgaria by administrative regions

Ministry of Labor and Social Policy - Survey on employers, aimed to provide information on their needs towards the labor force characteristics 

Bulgarian Construction Chamber, Center for Energy Efficiency EnEffect, BSys - Identifying the needs for professional training in sustainable building and energy effiency of buildings

Center for Economic Development - Level of awareness among business for different flexible forms of employment

Sofiaconcept Ltd. - Survey on french language use in Bulgaria