Mathematics

KOWALEWSKI, GERHARD.

Berlin, 1954.

BONOLA, ROBERTO.

leipzig u. Berlin, teubner, 1908.

GRAESER, ERNST.

München, R. Oldenbourg, 1950.

NEYMAN, J. - DAVID, F.N. (EDT.).

London, John Wiley & Sons, 1966.

SZABO, ARPAD.

München, R. Oldenburg, 1969.

ROSSER, J. BARKLY.

New York, McGraw-Hill Book Comp., 1953

KOBRINSKII, N. E. & B. A. TRAKHTENBROT.

Amsterdam, North-Holland Publ. Comp., 1965.

RIEMANN, BERNHARD.

Göttingen: Verlag der Dieterichschen Buchhandlung, 1860.

HALL, A. RUPERT.

Cambridge, London etc., Cambridge University Press, (1980).

BAIRE, RENÉ.

Paris, Gauthier-Villars, 1905.

WEYL, HERMANN.

Leipzig und Berlin, B.G. Teubner, 1913.

LA GRANGE (LAGRANGE), JOSEPH LOUIS. - MAXIMA AND MINIMA.

(Berlin, Haude et Spener, 1767 and Berlin, Ch. Fr. Voss, 1774).

POINCARÉ, HENRI.

(Berlin, Uppsala & Stockholm, Paris, 1895).

KLEIN, FELIX.

(Leipzig, B.F. Teubner, 1871 a. 1873).

WIEDEMANN, E. und F. HAUSER.

Halle, Max Niemeyer, 1918.

HEINE, E.

Berlin, Georg Reimer, 1861.

SLEPIAN, DAVID.

New York, American Telephone and Telegraph Company, 1962.

WYNER, A. D.

New York, American Telephone and Telegraph Company, 1975.