Mathematical models 43 Congresses 33 Decision-making 11 Economics 10 Economics, Mathematical 9 Game theory 8 Mathematical optimization 8 Econometrics 7 Equilibrium (Economics) 7 Business cycles 6 Operations research 6 Control theory 5 Econometric models 5 Economic conditions 5 Decision support systems 4 Negotiation 4 System analysis 4 Decision making 3 Environmental policy 3 Equations, Simultaneous 3 Linear programming 3 Macroeconomics 3 Marketing 3 Multiple criteria decision making 3 Prices 3 Production functions (Economic theory) 3 Programming (Mathematics) 3 Regional economics 3 Algebras, Linear 2 Austrian school of economists 2