00303    a2200109   450000500170000002000180001708400150003510000200005024500830007026000300015330000100018320260417150936.0  a9781032936352  2CCa B245   aKRICHEN (Bilel)  a Spectral theory for Linear operators: Demicompactness and perturbation theory  bCRC Press,  c2025,aOxon  a320p.