Penrose, Roger
Techniques of differential topology in relativity - SIAM 1972 - 72p. - CBMS-NSF Regional conference series in Applied Mathematics 7 .
515.1 / PEN
Techniques of differential topology in relativity - SIAM 1972 - 72p. - CBMS-NSF Regional conference series in Applied Mathematics 7 .
515.1 / PEN