Statistical rehabilitation of improper correlation matrices Arnoldo Frigessi Anders Løland Antonio Pievatolo Fabrizio Ruggeri Publication details Journal: Quantitative finance (Print), vol. 11, p. 1081–1090, 2011 International Standard Numbers: Printed: 1469-7688 Electronic: 1469-7696 Link: DOI: doi.org/10.1080/14697680903390118 Arnoldo Frigessi Scientific strategic advisor Anders Løland Research Director SAMBA You are here: Home Publications Scientific article Statistical rehabilitation of improper correlation matrices