@article{EJDE_2008__2008__a3,
     author = {Hayashi, Nakao and Naumkin, Pavel I.},
     title = {Asymptotic behavior for a quadratic nonlinear {Schr\"odinger} equation},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2008},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2008__2008__a3/}
}