Gilbert Carl Struble. [No authors listed] Trans Sect Ophthalmol Am Acad Ophthalmol Otolaryngol. 1975 Nov-Dec;79(6):OP900. PMID: 1108357
Ludwig Neyses MD. Ozkan J. Eur Heart J. 2017 Oct 01;38(37):2799-2800. doi: 10.1093/eurheartj/ehx482. PMID: 28982233
In memoriam. Ludwig von Bertalanffy 1901-1972. Gray W. Am J Psychiatry. 1973 Nov;130(11):1292. doi: 10.1176/ajp.130.11.1292. PMID: 4583416
[Ludwig Lendle]. Holtz P. Naunyn Schmiedebergs Arch Pharmakol. 1970;266(1):1-2. doi: 10.1007/BF00997777. PMID: 4250868
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