Homotopy properties of the real orthogonal groups

[1] CARTAN E, 1936, ACTUALITIES SCI IND, V8

[2] FREUDENTHAL H, 1937, COMPOS MATH, V5, P299

[3] HOPP H, 1931, MATH ANN, V104, P637

[4] HUREWICZ H, 1935, P KON AK WET AMST, V38, P112

[5] Hurewicz W, 1936, P K AKAD WET-AMSTERD, V39, P117

[6] HUREWICZ W, 1941, P NAT ACAD SCI, V27, P61

[7] Pontryagin L, 1938, CR ACAD SCI URSS, V19, P361

[8] On the theory of sphere-bundles [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1940, 26 : 148 - 153

[9] Whitney H., 1937, B AM MATH SOC, V43, P785

[1] CARTAN E, 1936, ACTUALITIES SCI IND, V8

[2] FREUDENTHAL H, 1937, COMPOS MATH, V5, P299

[3] HOPP H, 1931, MATH ANN, V104, P637

[4] HUREWICZ H, 1935, P KON AK WET AMST, V38, P112

[5] Hurewicz W, 1936, P K AKAD WET-AMSTERD, V39, P117

[6] HUREWICZ W, 1941, P NAT ACAD SCI, V27, P61

[7] Pontryagin L, 1938, CR ACAD SCI URSS, V19, P361

[8] On the theory of sphere-bundles [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1940, 26 : 148 - 153

[9] Whitney H., 1937, B AM MATH SOC, V43, P785