References

 

• Aller L.H., 1983, in IAU Symp. 103, Planetary Nebulae, Flower D.R. (ed.). Dordrecht-Reidel, p. 1  
• Ardeberg A., Gustafsson B., Linde P., Nissen P.E., 1997, A&A 322, 13  
• Cardelli J.A., Clayton G.C., Mathis J.S., 1989, ApJ 345, 245 NASA ADS  
• Clegg R.E.S., 1987, MNRAS 229, 31 NASA ADS  
• Costa R.D.D., de Freitas Pacheco J.A., 1996, in IAU Symp. 180, Planetary Nebulae, Habing H., Lamers H.J.G.L.M. (eds.). Kluwer, p. 217  
• Costa R.D.D., Chiappini C., Maciel W.J., de Freitas Pacheco J.A., 1996, A&AS 116, 249 NASA ADS  
• de Freitas Pacheco J.A., 1993, ApJ 403, 673 NASA ADS  
• de Freitas Pacheco J.A., Barbuy B., Costa R.D.D., Idiart T.P., 1993a, A&A 271, 429 NASA ADS  
• de Freitas Pacheco J.A., Costa R.D.D., Maciel W.J., 1993b, A&A 279, 567 NASA ADS  
• de Freitas Pacheco J.A., 1998, AJ 116, 1701 NASA ADS  
• Dennefeld M., 1989, in Recent Developments of Magellanic Cloud Research, de Boer K.S., Spite F., Stasinska G. (eds.), p. 107  
• Gallagher J.S., et al., 1996, ApJ 466, 732 NASA ADS  
• Henry R.B., Liebert J., Boronson T.A., 1989, ApJ 339, 872 NASA ADS  
• Hill V., Andrievsky S., Spite M., 1995, A&A 293, 347 NASA ADS  
• Hill V., Barbuy B., Spite M., 1997, A&A 323, 461 NASA ADS  
• Kaler J.B., Shaw R.A., Kwitter K.B., 1990, ApJ 359, 392 NASA ADS  
• Kingsburgh R.L., Barlow M.J., 1994, MNRAS 271, 257 NASA ADS  
• Kolbulnick C., 1998, in Abundance Profiles: Diagnostic Tools for Galaxy History, Friedli D., Edmunds M., Robert C., Drissen L. (eds.), PASP Conf. Ser. 147, 108  
• Köppen J., Acker A., Stenholm B., 1991, A&A 248, 197 NASA ADS  
• Leisy P., Dennefeld M., 1996, A&AS 116, 95 NASA ADS  
• Luck R.E., Lambert D.L., 1985, ApJ 298, 782 NASA ADS  
• Maciel W.J., Dutra C.M., 1992, A&A 262, 271 NASA ADS  
• Maciel W.J., Köppen J., 1994, A&A 282, 436 NASA ADS  
• Marigo P., 1999, astro-ph/9912341  
• Osterbrock D.E., 1989, Astrophysics of Gaseous Nebulae and Active Galactic Nuclei. University Science Books, Santa Cruz  
• Peimbert M., 1985, RMxAA 10, 125 NASA ADS  
• Peimbert M., Serrano A., 1980, RMxAA 5, 9 NASA ADS  
• Peimbert M., Torres-Peimbert S., 1983, Planetary Nebulae, IAU Symp. 103, Flower D. (ed.). Reidel-Dordrecht, p. 233  
• Peimbert M., Torres-Peimbert S., 1987, RMxAA 15, 117 NASA ADS  
• Renzini A., Voli M., 1981, A&A 94, 175 NASA ADS  
• Richer M.G., 1993, ApJ 415, 240 NASA ADS  
• Russel S.C., Dopita M., 1990, ApJS 74, 93 NASA ADS  
• Torres-Peimbert S., 1984, in Stellar Nucleosynthesis, Chiosi C., Renzini A. (eds.). Dordrecht-Reidel, p. 3  
• Torres-Peimbert S., Peimbert M., 1977, RMxAA 2, 181 NASA ADS  
• Vallenari A., Chiosi C., Bertelli G., Aparicio A., Ortolani S., 1996, A&A 309, 367 NASA ADS  
• Westerlund B.E., Linde P., Lynga G., 1995, A&A 298, 39 NASA ADS