Plessis, A. D. (2006). Minimal Intransigent Hypersurfaces. In J.-P. Brasselet & M. A. Soares Ruas (Eds.), Real and Complex Singularities: São Carlos Workshop 2004 (pp. 299-310). Birkhäuser Verlag.
Thomsen, K. & Manuilov, V. (2006). The group of unital C*-extensions. In B. Bojarski, A. Mishchenko & A. Weber (Eds.), C*-algebras and Elliptic Theory (pp. 151-156). Birkhäuser Verlag.