OPTNSR: an interactive software system for optimal design o-f statically and dynamically loaded structures with nonline-ar response / by M.A. Bhatti...[et al.] - Berkeley, Calif. : University of California, College of Engineering - 181 p. - Report ; No. UCB / EERC 81-02 .

"Prepared under the sponsorship of the National Science Fou-ndation Grant PFR-7908261".