Your search returned the following 2 documents:

2. How Single Ant ACO Systems Optimize Pseudo-Boolean Functions
   Benjamin Doerr, Daniel Johannsen, and Ching Hoo Tang
   In: Parallel Problem Solving from Nature – PPSN X, Dortmund, Germany, 2008, 378-388
   [PDF: Download: DoerrJohannsenTang_HowSingleAntACOSystemsOptimizePseudo-BooleanFunctions.pdf] [PDF: Download: DoerrJohannsenTang_Appendix_HowSingleAntACOSystemsOptimizePseudo-BooleanFunctions.pdf]
   
1. Optimising Spatial and Tonal Data for Homogeneous Diffusion Inpainting
   Markus Mainberger, Sebastian Hoffmann, Joachim Weickert, Ching Hoo Tang, Daniel Johannsen, Frank Neumann, and Benjamin Doerr
   In: Scale Space and Variational Methods in Computer Vision : Third International Conference, SSVM 2011, Ein-Gedi, Israel, 2011, 26-37