@misc{indiciae591a8b7f0581, title = {Unified constitutive material models for nonlinear finite-element structural analysis}, author = {Kaufman, A. and Laflen, J. H. and Lindholm, U. S.}, year = {1985}, url = {https://ntrs.nasa.gov/citations/19850016027}, note = {Source identifier: 19850016027} }