@article{lizama_prado_2009, 
  title={On duality and spectral properties of ( a, k)-regularized resolvents}, 
  volume={139}, 
  DOI={10.1017/s0308210507000364}, 
  abstractNote={<jats:p>We construct a duality theory for<jats:italic>(a, k)</jats:italic>-regularized resolvents, extending some of the known theorems for dual semigroups. We present several classes of spaces, which in the semigroup case correspond to the Favard class and the sun-dual space. By duality arguments spectral inclusion theorems for regularized resolvents are also obtained.</jats:p>}, 
  number={03}, 
  publisher={Cambridge University Press (CUP)}, 
  author={Lizama and Prado}, 
  year={2009}, 
  month={May}
  }