17 Jul 2000 / in "Kondo Effect and dephasing in low-dimensional metallic systems", NATO Science Series II, vol. 50, 211 (Kluwer Academic Publishers, 2001)
23 Sep 2004 / in: "Concepts in Electron Correlation", edited by A. C. Hewson and V. Zlatic, NATO Science Series II: Mathematics, Physics and Chemistry - Vol. 110 (Kluwer Academic Publishers, 2003)