"Gabriel Gustav Valentin (1810-1883) Bern Physiologist". JAMA: The Journal of the American Medical Association. 213 (10): 1677–1678. 1970. doi:10.1001/jama.1970.03170360075017. PMID4916556.
"Gabriel Gustav Valentin (1810-1883) Bern Physiologist". JAMA: The Journal of the American Medical Association. 213 (10): 1677–1678. 1970. doi:10.1001/jama.1970.03170360075017. PMID4916556.