Contreras, C. S.; Sahai, R.; Gil de Paz, A. (October 2002). Physical structure of the protoplanetary nebula CRL618. I. Optical long-slit spectroscopy and imaging. Astrophysical Journal. 578 (1): 269—289. arXiv:astro-ph/0206200. Bibcode:2002ApJ...578..269S. doi:10.1086/342316.(англ.)
doi.org
Westbrook, W. E.; Gezari, D. Y.; Hauser, M. G.; Werner, M. W.; Elias, J. H.; Neugebauer, G.; Lo, K. Y. (1976). One-millimeter continuum emission studies of four molecular clouds. Astrophysical Journal. 209: 94—101. Bibcode:1976ApJ...209...94W. doi:10.1086/154695.(англ.)
Contreras, C. S.; Sahai, R.; Gil de Paz, A. (October 2002). Physical structure of the protoplanetary nebula CRL618. I. Optical long-slit spectroscopy and imaging. Astrophysical Journal. 578 (1): 269—289. arXiv:astro-ph/0206200. Bibcode:2002ApJ...578..269S. doi:10.1086/342316.(англ.)
harvard.edu
ui.adsabs.harvard.edu
Westbrook, W. E.; Gezari, D. Y.; Hauser, M. G.; Werner, M. W.; Elias, J. H.; Neugebauer, G.; Lo, K. Y. (1976). One-millimeter continuum emission studies of four molecular clouds. Astrophysical Journal. 209: 94—101. Bibcode:1976ApJ...209...94W. doi:10.1086/154695.(англ.)
Contreras, C. S.; Sahai, R.; Gil de Paz, A. (October 2002). Physical structure of the protoplanetary nebula CRL618. I. Optical long-slit spectroscopy and imaging. Astrophysical Journal. 578 (1): 269—289. arXiv:astro-ph/0206200. Bibcode:2002ApJ...578..269S. doi:10.1086/342316.(англ.)