An ellipsoid algorithm for nonlinear programming. - Joseph G. Ecker; Michael Kupferschmid (Math. Program., 1983)

A numerical investigation of rank-two ellipsoid algorithms for nonlinear programming. - Ahmed Ech-Cherif; Joseph G. Ecker; Michael Kupferschmid (Math. Program., 1989)

Performance of Several Optimization Methods on Robot Trajectory Planning Problems. - Joseph G. Ecker; Michael Kupferschmid; Samuel P. Marin (SIAM J. Sci. Comput., 1994)

Numerical Verification of Second-Order Sufficiency Conditions for Nonlinear Programming. - Terrence K. Kelly; Michael Kupferschmid (SIAM Rev., 1998)

An ellipsoid algorithm for equality-constrained nonlinear programs. - Sharmila Shah; John E. Mitchell 001; Michael Kupferschmid (Comput. Oper. Res., 2000)

An application of nonlinear optimization in molecular biology. - Joseph G. Ecker; Michael Kupferschmid; C. E. Lawrence; A. A. Reilly; A. C. H. Scott (Eur. J. Oper. Res., 2002)

Active set strategies in an ellipsoid algorithm for nonlinear programming. - Edgar K. Rugenstein; Michael Kupferschmid (Comput. Oper. Res., 2004)

Solving nonlinear principal-agent problems using bilevel programming. - Mark Cecchini; Joseph G. Ecker; Michael Kupferschmid; Robert Leitch (Eur. J. Oper. Res., 2013)