@article{BASM_2011_2_a5,
     author = {Dorel I. Duca and Liana Lup\c{s}a},
     title = {Saddle points with respect to a~set},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {70--80},
     publisher = {mathdoc},
     number = {2},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2011_2_a5/}
}