American Chemical Society Publications (ACS) Czytaj więcej o American Chemical Society Publications (ACS)
Registry of Open Access Repositories (ROAR) Czytaj więcej o Registry of Open Access Repositories (ROAR)
E-LIS - e-prints in library & information science Czytaj więcej o E-LIS - e-prints in library & information science
Taylor and Francis Group - Online Journals Czytaj więcej o Taylor and Francis Group - Online Journals
ITU - International Telecommunication Union Czytaj więcej o ITU - International Telecommunication Union