Abolmasov, P., and A. V. Moiseev. 2012. “Kinematics of the Nebular Complex MH9/10/11 Associated With HoIX X-1”. Revista Mexicana De Astronomía Y Astrofísica 44 (2):301-9. https://www.revistas.unam.mx/index.php/revmexaa/article/view/20687.