Hedlund, L., Jones, D., Effmann, E., Johnson, G.A., Bates, W., Wolfe, W., & Putman, C. (1979). Computerized Tomographic Study of the Dog Lung During Hemorrhagic-Shock. Investigative Radiology, 14(5), 369–369. https://insights.ovid.com/crossref?an=00004424-198111000-00003

Johnson, G. A., & O’Foghludha, F. (1978). An experimental "trans-molybdenum" tube for mammography. Radiology, 127(2), 511–516. https://doi.org/10.1148/127.2.511

Johnson, G. A., Manson, E. L., & O’Foghludha, F. (1978). Simple method of obtaining Si(Li) detector efficiency. Nuclear Instruments and Methods, 151(1–2), 217–220. https://doi.org/10.1016/0029-554X(78)90491-3

Johnson, G. A., & O'Foghludha, F. (1977). Spectrometric Studies of Waveform and Filtration Effects in Mammography. Physics in Medicine and Biology, 22(3), 593–593. https://scholars.duke.edu/display/pub887683

Johnson, G. A. (1975). Free radicals formed by exposure of pyrimidine solids to sodium atoms: an electron spin resonance study. Proc Natl Acad Sci U S A, 72(3), 974–978. https://doi.org/10.1073/pnas.72.3.974

Johnson, G. A., Danieley, N., Suddarth, S., & Dunnick, N. R. (1972). A System for Digital Video Densitometry. American Journal of Roentgenology, 141(6), 1360–1361. https://www.ajronline.org/doi/abs/10.2214/ajr.114.4.840