The Present and Future of Planetary Nebula Research. A White Paper by   the IAU Planetary Nebula Working Group
  We present a summary of current research on planetary nebulae and their central stars, and related subjects such as atomic processes in ionized nebulae, AGB and post-AGB evolution. Future advances are discussed that will be essential to substantial improvements in our knowledge in the field. 
K. B. Kwitter (1), R.H. M\'endez (2), M. Pe\~na (3), L. Stanghellini   (4), R. L. M. Corradi (5 and 6), O. DeMarco (7), X. F...
astro-ph.SR