TY - RPRT TI - FACTUNC: a user-friendly system for unconstrained optimization AU - Jackson, Richard H F AU - McCormick, Garth P AU - Sofer, Arlela PY - 1989 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 89-4159 DO - 10.6028/NIST.IR.89-4159 ER -