Kopp JB, Miller KD, Mican JA, Feuerstein IM, Vaughan E, Baker C, Pannell LK, Falloon J. Crystalluria and urinary tract abnormalities associated with indinavir. Ann Intern Med. 1997 Jul 15;127(2):119–25. doi: 10.7326/0003-4819-127-2-199707150-00004. PMID: 9230000.