Mathematics

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München, Biederstein Verlag, 1949.

VIVANTI, G.

leipzig, Teubner, 1906.

MIKUSINSKI, JAN.

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BETH, EVERT W.

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FORSYTHE, GEORGE E. AND WOLFGANG R. WASOW.

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ROBINSON, ABRAHAM.

Amsterdam, North-Holland, 1951.

KLAUA, DIETER.

Berlin, 1964.

BIERBACH, L.

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GRAYBILL, FRANKLIN A.

New York, Toronto, London, McGraw-Hill, 1961.

GALTON, FRANCIS. - FIRST BOOK OF THE STATISTICAL STUDY OF BIOLOGICAL VARIATION.

London and New York, Macmillan and Co., 1889.

PEANO, GUISEPPE.

Torino, Bocca, 1887.

BIRCH, T.W.

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BURKHARDT, HEINRICH.

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EULER, LEONHARD.

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LAMBERT, JOHANN HEINRICH.

(Berlin, C.F. Voss, 1772.

LAMBERT, JOHANN HEINRICH.

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WEIERSTRASS, KARL & LEOPOLD KRONECKER.

Berlin, Königl. Akad. d. Wissenschaften, 1866.