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• Ghosh, S. K.; Iqbal, M.; Derecho, A. T.; Fintel, M.
  Measures of Ductility for Structural Walls in Earthquake-Resistant Multistory Buildings.
  National Science Foundation, Washington, DC. Engineering and Applied Science., January 1978, 12 p.
  Keywords: DRAIN 2D computer program; Dynamic response; Ductility tests; Bend tests; Earthquake engineering; Earthquake resistant structures; Flexural strength; Computer applications; Walls; Dynamic structural analysis

• Hong, S. T.; Whitman, R. V.
  Optimum Seismic Protection for New Building Construction in Eastern Metropolitan Areas. Ductility Requirements of Multidegree Freedom Systems.
  National Science Foundation, Washington, DC. Engineering and Applied Science., June 1973, 39 p.
  Identifying Number(s): INTERNAL STUDY-35
  Keywords: Ground motion; Buildings; Time series analysis; Earthquake engineering; Earthquake resistant structures; Stress analysis; Ductility tests; Steel structures; Computer applications; Degrees of freedom; Graphic methods; Concrete structures; Tall buildings; Dynamic structural analysis