@misc{indiciaef774b1fa51c9, title = {Open-Section Composite Structural Elements}, author = {Loftin, T. A. and Smith, C. A. and Raheb, S. J. and Nowitzky, A. M.}, year = {1991}, url = {https://ntrs.nasa.gov/citations/19910000053}, note = {Source identifier: 19910000053} }