Other connections

• About Graphs and Combinatorics

• Applicable Analysis and Discrete Mathematics (AADM)
• Electronic Notes in Discrete Mathematics
• Electronic Journal of Combinatorics
• Graph Theory Resources
• Strong Perfect Graph Theorem

• About Optimization

• Optimization Online

• Math Search

• Arquivo Escolar
• arXiv.org (Mathemathics)
• AMS Mathematics Subject Classification
• Math Sci Net
• PAM - Portuguese Archive of Mathematics
• SCOPUS - abstract and citation database
• Zentralblatt MATH

• Research Societies and Groups

• European Mathematical Society
• EURO-The Association of European Operational Research Societies