1. Hubble Space Telescope. https://hubblesite.org/. Accessed 20 Mar 2021
2. Gaia Archive at ESA. https://gea.esac.esa.int/archive/. Accessed 20 Mar 2021
3. Infrared Astronomical Satellite (IRAS). https://irsa.ipac.caltech.edu/Missions/iras.html. Accessed 20 Mar 2021
4. Krakowski, T., et al.: Machine-learning identification of galaxies in the WISE SuperCOSMOS all-sky catalogue. Astron. Astrophy. 596, A39 (2016)
5. Wide-field Infrared Survey Explorer (WISE) and NEOWISE. https://irsa.ipac.caltech.edu/Missions/wise.html. Accessed 20 Mar 2021