Bulgarian Academy of Sciences
   Board, central administration and research units.
   http://www.cu.bas.bg/

Bulgarian Ship Hydrodynamics Centre
   Conducts research in ship and offshore hydrodynamics, coastal hydraulics, aerodynamics, environment, water transport and information technology.
   http://www.bshc.bg/

IEEE Bulgaria
   Regional section of the institute of electrical and electronics engineers.
   http://www.ieee.bg/

National Center for Information and Documentation
   Develops and disseminates information products and services, produces and maintains databases.
   http://www.nacid.acad.bg/

Wide Field Plate Database
   Contains the descriptive information for the astronomical wide-field (>1°) photographic observations stored in numerous archives all over the world.
   http://www.wfpa.bas.bg/