TY - RPRT TI - X-ray-selected M dwarfs and the diffuse X-ray background AU - Caillault, J.-P. AU - Helfand, D. J. AU - Nousek, J. A. AU - Takalo, L. O. PY - 1986 UR - https://ntrs.nasa.gov/citations/19860051388 ID - 19860051388 ER -