TY - RPRT TI - High-resolution imaging gamma-ray spectroscopy with externally segmented germanium detectors AU - Callas, J. L. AU - Mahoney, W. A. AU - Varnell, L. S. AU - Wheaton, W. A. PY - 1993 UR - https://ntrs.nasa.gov/citations/19930048949 ID - 19930048949 ER -