Brunzendorf, J.; Meusinger, H. (). „The galaxy cluster Abell 426 (Perseus). A catalogue of 660 galaxy positions, isophotal magnitudes and morphological types”. Astronomy and Astrophysics Supplement Series (în engleză). 139 (1): 141–161. Bibcode:1999A&AS..139..141B. doi:10.1051/aas:1999111. ISSN0365-0138.
harvard.edu
adsabs.harvard.edu
Brunzendorf, J.; Meusinger, H. (). „The galaxy cluster Abell 426 (Perseus). A catalogue of 660 galaxy positions, isophotal magnitudes and morphological types”. Astronomy and Astrophysics Supplement Series (în engleză). 139 (1): 141–161. Bibcode:1999A&AS..139..141B. doi:10.1051/aas:1999111. ISSN0365-0138.
Brunzendorf, J.; Meusinger, H. (). „The galaxy cluster Abell 426 (Perseus). A catalogue of 660 galaxy positions, isophotal magnitudes and morphological types”. Astronomy and Astrophysics Supplement Series (în engleză). 139 (1): 141–161. Bibcode:1999A&AS..139..141B. doi:10.1051/aas:1999111. ISSN0365-0138.