Daduna, Hans Elsbeth Bredendiek 1937–1999. (German) Zbl 1042.01516 Mitt. Math. Ges. Hamb. 18, 5-6 (1999). MSC: 01A70 PDFBibTeX XMLCite \textit{H. Daduna}, Mitt. Math. Ges. Hamb. 18, 5--6 (1999; Zbl 1042.01516)
Brückner, Helmut; Daduna, Hans Renate Carlsson 1941-1997. (German) Zbl 0944.01014 Mitt. Math. Ges. Hamb. 16, 5-6 (1997). MSC: 01A70 01A60 PDFBibTeX XMLCite \textit{H. Brückner} and \textit{H. Daduna}, Mitt. Math. Ges. Hamb. 16, 5--6 (1997; Zbl 0944.01014)