@misc{indiciae9a32b456e506, title = {Solid-state energy-dispersion spectrometer for electron-microprobe X-ray analysis.}, author = {Fitzgerald, R. and Heinrich, K. F. J. and Keil, K.}, year = {1968}, url = {https://ntrs.nasa.gov/citations/19680038308}, note = {Source identifier: 19680038308} }