N. D. Birrell; P. C. W. Davies (1982). Quantum fields in cu…
N. D. Birrell; P. C. W. Davies (1982). Quantum fields in curved space. Cambridge University Press. ISBN 978-0521233859.
N. D. Birrell; P. C. W. Davies (1982). Quantum fields in curved space. Cambridge University Press. ISBN 978-0521233859.