@misc{Halmos_Paul_Richard_(1916–2006)_Spectra_1952,
 author={Halmos, Paul Richard (1916–2006)},
 editor={Polskie Towarzystwo Matematyczne},
 copyright={Rights Reserved - Restricted Access},
 address={Cracov},
 howpublished={online},
 year={1952},
 publisher={[s.n.]},
 language={eng},
 language={eng},
 type={Text},
 title={Spectra and spectral manifolds},
}