- 2004 International Conference on Service Systems and Service Management
- IEEE International Conference on Engineering of Complex Computer Systems
- Conference on Image Reconstruction from Incomplete Data III
- Computational Management Science Conference
- Eigenvalues and Critical Parameters
- The 28th South African Symposium on Numerical and Applied Mathematics (SANUM 2004)
- 16th International Symposium on Mathematical Theory of Networks and Systems(MTNS 2004)
- 2004 - Dynamical Systems and Applications
- MESM'2003
- FUBUTEC'2004 -Future Business Technology
- 2004 SIAM Annual Meeting
- ISC'2004 Industrial Simulation Conference
- EUROMEDIA'2004
- ECEC'2004
- EURO XXI, 21st European Conference on Operational Research 2006
- 35th Annual Conference of the Italian Operations Research Society
- International Conference on the Research Trend in PDE, Modeling and Computation
- International Conference on Continuous Optimization
- Latin-American Conference on Combinatorics, Graphs and Applications
- The IASTED International Conference on Applied Simulation and Modelling - ASM 2004