Mathematics

HELLWIG, GÜNTER.

Stuttgart, 1960.

COURANT, R.

Berlin, J. Springer, 1930-29.

SCHOENFLIES, A.

Berlin, J. Springer, 1925.

COMPUTERS - LEE, JOHN A.N.

N.Y., Reinhold, (1966).

RAY, WILLIAM O.

New Jersey, (1988).

TIETZE, HEINRICH.

München, Biederstein Verlag, 1949.

VIVANTI, G.

leipzig, Teubner, 1906.

MIKUSINSKI, JAN.

London, N.Y., (1959).

BETH, EVERT W.

Dordrecht, (1962).

FORSYTHE, GEORGE E. AND WOLFGANG R. WASOW.

N.Y., London, (1960).

ROBINSON, ABRAHAM.

Amsterdam, North-Holland, 1951.

KLAUA, DIETER.

Berlin, 1964.

ROBINS, BENJAMIN & LEONARD (LEONHARD) EULER.

Berlin, A. Haude, 1745.

TURNBULL, H.W. and A.C. AITKEN.

London a. Glasgow, 1932.

BOCHER, MAXIME.

Leipzig, Berlin, 1932.

BOLDRINI, MARCELLO.

London, (1972).

FRAZER, R.A., W.J. DUNCAN, A.R. COLLAR.

Cambridge, N.Y., 1947.

JORDAN, CHARLES.

N.Y., Chelsea Publ. Co., 1947.