@article {2006,
	title = {Bound and ground states of coupled nonlinear Schr{\"o}dinger equations},
	journal = {C. R. Acad. Sci. Paris, Ser. I 342 (2006) 453-458},
	year = {2006},
	abstract = {We prove existence of bound and ground states of some systems of coupled nonlinear Schrodinger equations.},
	doi = {10.1016/j.crma.2006.01.024},
	url = {http://hdl.handle.net/1963/2149},
	author = {Antonio Ambrosetti and Eduardo Colorado}
}
@article {2006,
	title = {Bound states of Nonlinear Schroedinger Equations with  Potentials Vanishing at Infinity},
	journal = {J. Anal. Math. 98 (2006) 317-348},
	number = {SISSA;18/2005/M},
	year = {2006},
	doi = {10.1007/BF02790279},
	url = {http://hdl.handle.net/1963/1756},
	author = {Antonio Ambrosetti and Andrea Malchiodi and David Ruiz}
}
@article {1998,
	title = {Branching points for a class of variational operators},
	journal = {J. Anal. Math.  76 (1998) 321-335},
	year = {1998},
	publisher = {Springer},
	doi = {10.1007/BF02786940},
	url = {http://hdl.handle.net/1963/3314},
	author = {Antonio Ambrosetti}
}
