TOVMASSIAN, H. M.; TIERSCH, H. Photometric and spectroscopic study of seven Shakhbazian compact galaxy groups. Revista Mexicana de Astronomía y Astrofísica, [S. l.], v. 44, n. 1, p. 125–136, 2012. Disponível em: https://journals.unam.mx/index.php/revmexaa/article/view/23744. Acesso em: 13 may. 2024.