@article{KJM_2017_41_2_a0,
     author = {F. Bouchelaghem and A. Ardjouni and A. Djoudi},
     title = {Positive {Solutions} for a {Second-Order} {Difference} {Equation} with {Summation} {Boundary} {Conditions}},
     journal = {Kragujevac Journal of Mathematics},
     pages = {167 },
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2017_41_2_a0/}
}