Davis, S. D.; Yankelevitz, D. F.; Wand, A.; Chiarella, D. A. (January 1996). "Juxtaphrenic peak in upper and middle lobe volume loss: assessment with CT". Radiology. 198 (1): 143–149. doi:10.1148/radiology.198.1.8539368. PMID8539368.
Davis, S. D.; Yankelevitz, D. F.; Wand, A.; Chiarella, D. A. (January 1996). "Juxtaphrenic peak in upper and middle lobe volume loss: assessment with CT". Radiology. 198 (1): 143–149. doi:10.1148/radiology.198.1.8539368. PMID8539368.