Dumitrascu, D. L., and J. Barnert. “MARTIN WIENBECK 27.12.1936 - 27.04.2005”. Journal of Gastrointestinal and Liver Diseases, vol. 14, no. 2, June 2005, p. 207, https://www.jgld.ro/jgld/index.php/jgld/article/view/2005.2.17.