Items where Author is "<span class="person_name">Köppen, J.</span>"
Number of items: 1.
  • A barium central star binary in the Type-I diamond ring planetary nebula Abell 70. (2012) B. Miszalski, H. M. J. Boffin, David J. Frew, A. Acker, J. Köppen, A. F. J. Moffat and Q. A. Parker