Compact infrared sources : NGC 7538 and the galactic center
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. Three infrared and radio sources in NGC 7538 have been observed from 8 to 13 [...] with 1% spectral and 5" spatial resolution. The very small southern source shows a deep silicate...
Internet
https://thesis.library.caltech.edu/3225/1/Willner_sp_1976.pdfWillner, Steven Paul (1976) Compact infrared sources : NGC 7538 and the galactic center. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/YGRP-NJ17. https://resolver.caltech.edu/CaltechETD:etd-08252008-153611 <https://resolver.caltech.edu/CaltechETD:etd-08252008-153611>