Mathematics

STURM, LEONHARD CHRISTOPH.

Frankfurt, Schrey und Hartmann, 1707.

BUGGE, THOMAS.

Kiøbenhavn (Copenhagen), Poulsens forlag, 1796.

ROSSER, J. BARKLY.

New York, McGraw-Hill Book Comp., 1953

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

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

CHANDRASEKHAR, SUBRAMANYAN.

Lancaster, American Physical Society, 1943.

CARNAP, RUDOLF.

(Chicago, 1965).

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.

CAYLEY, ARTHUR.

Cambridge, Deighton, Bell and Co., 1876.

TWOMEY, S.

New York, Dover Publ., 1996.

BECK, ANATOLE.

Berlin, Heidelberg etc., Springer Verlag, 1974.

MATHEMATICAL REVIEWS. VOLS. 13-29.

London & Beccles, 1952-65.

MATHEMATICA SCANDINAVICA. VOLS. 1-37.

Coph., 1953-75.