1. Acker, A., Ochsenbein, F., Stenholm, B., Tylenda, R., Marcout, J. & Schohn, C. 1992, Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Garching: ESO)
2. Photometric variability of the protoplanetary nebula LSIV-12°111
3. Performance of the WIYN fiber-fed MOS system: Hydra
4. Bond, H. E. 2000, in ASP Conf. Ser. 199, Asymmetrical Planetary Nebulae II: From Origins to Microstructures, ed. J. H. Kastner, N. Soker, & S. Rappaport (San Francisco: ASP), 115
5. Bond, H. E. & Ciardullo, R. 1989, in IAU Colloq. 114, White Dwarfs, ed. G. Wegner (Berlin: Springer), 473