Mathematics

CZUBER, EMANUEL.

Wien, Seidel & Sohn, 1921.

LAMBERT, JOHANN HEINRICH [NON-EUCLIDEAN GEOMETRY].

(Berlin, Haude & Spener, 1770).

RUSSELL, BERTRAND.

London, George Allen & Unwin, (1950).

LORENSEN, PAUL.

Berlin, Springer, 1955.

ACKERMANN, WILHELM.

Berlin, Julius Springer, 1925.

BOCHNER, SALOMON.

Princeton, University Press, 1966.

BELL, E.T.

N.Y., McGraw-Hill, 1940.

SCHOLZ, HEINRICH & GISBERT HASENJAEGER.

Berlin & Göttingen & Heidelberg, Springer-Verlag, 1961.

BETH, E. W.

Paris, Gauthier-Villards, 1950.

BETH, E. W.

Paris, Gauthier-Villards, 1955.

WANG, HAO. & ROBERT NAUGHTON.

Paris, Gauthier-Villars, 1953.

MACDUFFEE, C.C.

N.Y., Chelsea Publ. Co., 1946.

MAGNUS, W. UND FRITZ OBERHETTINGER.

Berlin, Springer, 1943.

BROGGI, HUGO.

Leipzig und Berlin, Teubner, 1911.

BOWLEY, ARTHUR L.

London, 1926.

DENBOW, CARL H. AND VICTOR GOEDICKE.

N.Y., Harper & Row, (1959).

RUTHERFORD, D.E.

Edinborgh a. London, Oliver & Boyd, (1965).

MACWILLIAMS, JESSIE.

New York, American Telephone and Telegraph Company, 1964.