National Center for Information and Documentation

Develops and disseminates information products and services, produces and maintains databases.
http://www.nacid.acad.bg/

IEEE Bulgaria

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

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/