Alfred Pringsheim (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Alfred Pringsheim" in Portuguese language version.

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archive.org

Titchmarsh, E.C. (1939). The theory of functions second ed. [S.l.]: Oxford University Press

doi.org

dx.doi.org

Hadamard, J. (1954). «History of science and psychology of invention». Mathematika. 1: 1–3. doi:10.1112/S0025579300000450
Boas, R.P. (1989). «When is a C^∞ function analytic?». Math. Intelligencer. 11 (4): 34–37. doi:10.1007/BF03025882