@ARTICLE {4856,
author={R. A. Andreani and J. J. Júdice and M. Martinez and J.  Patrício},
doi={10.1007/s10107-009-0336-z},
journal={Mathematical Programming},
title={On the natural merit function for solving complementarity problems},
year={2011},
month={November},
volume={130},
number={1},
pages={211-223},
ISSN={0025-5610}
}