V444 Cygni and CQ Cephei, Key Wolf-Rayet Binary Stars [chapter]

Anne B. Underhill
1991 Wolf-Rayet Stars and Interrelations with other Massive Stars in Galaxies  
doi:10.1007/978-94-011-3306-7_48 fatcat:euhddsmjnbg5taord5vmtboi7a