TY - JOUR AU - R. Stencel AU - C. Jordan AU - R. Wing AU - Jeffrey Linsky AU - K. Carpenter AU - A. Brown AU - S. Czyzak BT - Bulletin of the American Astronomical Society PY - 1980 SE - 806 T2 - Bulletin of the American Astronomical Society TI - Chromospheric Densities and Geometrical Extensions of Red Giants and Supergiants using C II Lines as Diagnostics VL - 12 ER -