Science Explorer
links for
1998A&A...337L..35C
Infrared Space Observatory
http://nida.esac.esa.int/nida-cl-web/?ACTION=OBSERVATION&ID=76100601
Infrared Space Observatory
http://nida.esac.esa.int/nida-cl-web/?ACTION=OBSERVATION&ID=82100407
Infrared Space Observatory
http://nida.esac.esa.int/nida-cl-web/?ACTION=OBSERVATION&ID=82100508
Infrared Space Observatory
http://nida.esac.esa.int/nida-cl-web/?ACTION=OBSERVATION&ID=82100606
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