G. Contaldi, Gianni Di Pillo, Stefano Lucidi. A continuously differentiable exact penalty function for nonlinear programming problems with unbounded feasible set. Oper. Res. Lett., 14(3):153-161, 1993. [doi]
@article{ContaldiPL93,
title = {A continuously differentiable exact penalty function for nonlinear programming problems with unbounded feasible set},
author = {G. Contaldi and Gianni Di Pillo and Stefano Lucidi},
year = {1993},
doi = {10.1016/0167-6377(93)90027-E},
url = {http://dx.doi.org/10.1016/0167-6377(93)90027-E},
researchr = {https://researchr.org/publication/ContaldiPL93},
cites = {0},
citedby = {0},
journal = {Oper. Res. Lett.},
volume = {14},
number = {3},
pages = {153-161},
}