Earth Sciences
Geological Institute, Geophysical Institute, Institute of Water Problems, National Institute of Meteorology and Hydrology, Solar Terrestrial Influences Laboratory
Bulgarian Ship Hydrodynamics Centre
Conducts research in ship and offshore hydrodynamics, coastal hydraulics, aerodynamics, environment, water transport and information technology.
IEEE Bulgaria
Regional section of the institute of electrical and electronics engineers.
National Center for Information and Documentation
Develops and disseminates information products and services, produces and maintains databases.
Wide Field Plate Database
Contains the descriptive information for the astronomical wide-field (>1°) photographic observations stored in numerous archives all over the world.