TY - JOUR AU - M. Contini AU - B. Kozlovsky AU - G. Shav IV BT - Astronomy and Astrophysics N1 - JILA Pub. 2085 PY - 1980 SP - 273 EP - 280 T2 - Astronomy and Astrophysics TI - The calculation of the optical spectra of the Cygnus Loop UR - http://adsabs.harvard.edu/full/1980A\%26A....92..273C VL - 92 ER -