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Llínea 11: |
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| == Referències == | | == Referències == |
| + | * Aller, L. H.; Hyung, S. (2001). «Historical Remarks on the Spectroscopic Analysis of Planetary Nebulae (invited review)». En Kwok, Sun; Dopita, Michael; Sutherland, Ralph, ed. Proceedings of the 209th Symposium of the International Astronomical Union 209: 15. doi:10.1086/301091. Planetary |
| + | * Frankowski, Adam; Soker, Noam (2009). «Very late thermal pulses influenced by accretion in planetary nebulae». New Astronomy 14 (8): 654-658. doi:10.1016/j.newast.2009.03.006 |
| + | * Hubblesite, ed. (17 de diciembre de 1997). «Hubble Witnesses the Final Blaze of Glory of Sun-Like Stars» (en [[anglés]]) |
| + | * Mennessier, M. O.; Omont, A. (1990). From Miras to planetary nebulae: which path for stellar evolution? : Montpellier, France, September 4-7, 1989. Atlantica Séguier Frontières. ISBN 978-2863320778 |
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| == Bibliografia == | | == Bibliografia == |