@article{ASUO_2012_XX_1_a20,
     author = { Salah Mecheri and Hacene Mecheri },
     title = { The {Gateaux} derivative and orthogonality in
                            {C\ensuremath{\infty}} },
     journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}},
     publisher = {mathdoc},
     volume = {XX},
     number = {1},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/ASUO_2012_XX_1_a20/}
}