@article{RO_2008__42_3_361_0,
     author = {Jeyakumar, Vaithilingam and Srisatkunarajah, Sivakolundu and Huy, Nguyen Quang},
     title = {Unified global optimality conditions for smooth minimization problems with mixed variables},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {361--370},
     year = {2008},
     publisher = {EDP Sciences},
     volume = {42},
     number = {3},
     doi = {10.1051/ro:2008019},
     mrnumber = {2444492},
     zbl = {1153.90544},
     language = {en},
     url = {https://www.numdam.org/articles/10.1051/ro:2008019/}
}