1. Variational problem in the non-negative orthant of ℝ³: reflective faces and boundary influence cones

   • Ahmed El Kharroubi
   • Abdelhak Yaacoubi
   • Kawtar Bichard

   OriginalPaper 23 February 2012 Pages: 299 - 337

2. On converse Lyapunov theorems for fluid network models

   • Michael Schönlein
   • Fabian Wirth

   OriginalPaper 01 March 2012 Pages: 339 - 367

3. Additive functionals with application to sojourn times in infinite-server and processor sharing systems

   • Manfred Brandt
   • Andreas Brandt

   OriginalPaper 06 March 2012 Pages: 369 - 409