1. Plastic limit analysis and synthesis of structures by linear programming;Smith,1974
2. The elastoplastic analysis of planar frames for large displacements by mathematical programming;De Freitas,1979
3. Plastic analysis and synthesis of plates and shells by mathematical programming;Da Fonseca,1980
4. Análise elástica de estruturas articuladas espaciais sujeitas a grandes deslocamentos;De Freitas;CTE 41, CMEST,1981
5. Statics and kinematics for space frames subject to large displacements;De Freitas;CTE 45, CMEST,1981