TY - RPRT TI - Diffraction-limited spatial resolution of circumstellar shells at 10 microns AU - Bloemhof, E. E. AU - Townes, C. H. AU - Vanderwyck, A. H. B. PY - 1983 UR - https://ntrs.nasa.gov/citations/19830027703 ID - 19830027703 ER -