1. Optimum design of frames;Erbatur;Comput. Struct.,1992
2. Optimality criteria method for building frames;Tabak;J. Struct. Div. ASCE,1981
3. Optimum design of steel frames with stability constraints;Saka;Comput. Struct.,1991
4. Engineering optimization via genetic algorithm;Goldberg,1986
5. Particle swarm optimization;Kennedy,1995