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Berg, A; König, D (2002). "History of sports medicine in germany with special reference to the university of Freiburg". European Journal of Sport Science. 2 (4): 1–7. doi:10.1080/17461390200072402. S2CID71799741.
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Van Zundert, A; Goerig, M (2000). "August Bier 1861–1949. A tribute to a great surgeon who contributed much to the development of modern anesthesia on the 50th anniversary of his death". Regional Anesthesia and Pain Medicine. 25 (1): 26–33. doi:10.1016/S1098-7339(00)80007-3. PMID10660237. S2CID44806199.
Van Zundert, A; Goerig, M (2000). "August Bier 1861–1949. A tribute to a great surgeon who contributed much to the development of modern anesthesia on the 50th anniversary of his death". Regional Anesthesia and Pain Medicine. 25 (1): 26–33. doi:10.1016/S1098-7339(00)80007-3. PMID10660237. S2CID44806199.
Berg, A; König, D (2002). "History of sports medicine in germany with special reference to the university of Freiburg". European Journal of Sport Science. 2 (4): 1–7. doi:10.1080/17461390200072402. S2CID71799741.