@article{ASUO_2016_XXIV_1_a24,
     author = {Noureddine Zeddini and Adel Ben Dkhilb},
     title = {Positive solutions for semilinear elliptic
                            systems with sign-changing potentials},
     journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}},
     publisher = {mathdoc},
     volume = {XXIV},
     number = {1},
     year = {2016},
     url = {http://geodesic.mathdoc.fr/item/ASUO_2016_XXIV_1_a24/}
}