Zaanen, A. C. In memoriam Prof. Dr. J. Droste. (Dutch) Zbl 0113.00207 Nieuw Arch. Wiskd., III. Ser. 11, 93-94 (1963). PDFBibTeX XMLCite \textit{A. C. Zaanen}, Nieuw Arch. Wiskd., III. Ser. 11, 93--94 (1963; Zbl 0113.00207)
Zaanen, A. C. A note on perturbation theory. (English) Zbl 0101.33303 Nieuw Arch. Wiskd., III. Ser. 7, 61-66 (1959). PDFBibTeX XMLCite \textit{A. C. Zaanen}, Nieuw Arch. Wiskd., III. Ser. 7, 61--66 (1959; Zbl 0101.33303)
Zaanen, A. C. A note on measure theory. (English) Zbl 0086.04502 Nieuw Arch. Wiskd., III. Ser. 6, 58-65 (1958). PDFBibTeX XMLCite \textit{A. C. Zaanen}, Nieuw Arch. Wiskd., III. Ser. 6, 58--65 (1958; Zbl 0086.04502)