Babini, José Über das Symbol \({1\over h^r}\cdot\Delta^r z^{(n,k)}\). (Spanish) Zbl 0026.21001 Rev. Acad. Ci. Exact. Fis. Natur. Madrid 33, 19-26 (1936). MSC: 41-XX PDFBibTeX XMLCite \textit{J. Babini}, Rev. Acad. Ci. Madrid 33, 19--26 (1936; Zbl 0026.21001)
Knichal, Vladimír Dyadische Entwicklungen und Hausdorffsches Mass. (Dyadic expansions and Hausdorff measure.) (German. Czech summary) Zbl 0014.25702 Čas. Mat. Fys. 65, No. 4, 195-209 (1936). Reviewer: A. Khintchine (Moskva) MSC: 28A78 11K55 PDFBibTeX XMLCite \textit{V. Knichal}, Čas. Mat. Fys. 65, No. 4, 195--209 (1936; Zbl 0014.25702) Full Text: EuDML Link