Your query returned 2 results.

• Genetic Algorithm Optimization of Semi-Rigid Steel Structures,
  A.A. Del Savio, S.A.L. de Andrade, P.C.G.S. Vellasco and L.F. Martha
  Paper 24 from CCP: 82, ISBN 1-905088-05-1 (2005)
  
• A Non-Linear System for Semi-Rigid Steel Portal Frame Analysis,
  A.A. Del Savio, S.A.L. de Andrade, P.C.G. da S. Vellasco and L.F. Martha
  Paper 153 from CCP: 79, ISBN 0-948749-95-4 (2004)