@article {2007,
	title = {Boundary-clustered interfaces for the Allen{\textendash}Cahn equation},
	journal = {Pacific Journal of Mathematics  229 (2007), No. 2, 447{\textendash}468},
	year = {2007},
	publisher = {Mathematical Sciences Publishers},
	url = {http://hdl.handle.net/1963/5089},
	author = {Andrea Malchiodi and Wei-Ming Ni and Juncheng Wei}
}
@article {2005,
	title = {Multiple clustered layer solutions for semilinear Neumann problems on a ball},
	journal = {Ann. Inst. H. Poincare Anal. Non Lineaire 22 (2005) 143-163},
	year = {2005},
	publisher = {Elsevier},
	doi = {10.1016/j.anihpc.2004.05.003},
	url = {http://hdl.handle.net/1963/3532},
	author = {Andrea Malchiodi and Wei-Ming Ni and Juncheng Wei}
}
@article {2004,
	title = {Singularity perturbed elliptic equations with symmetry: existence of solutions concetrating on spheres, Part II},
	journal = {Indiana Univ. Math. J. 53 (2004) 297-392},
	number = {SISSA;93/2002/M},
	year = {2004},
	publisher = {Indiana University Mathematics Journal},
	doi = {10.1512/iumj.2004.53.2400},
	url = {http://hdl.handle.net/1963/1663},
	author = {Antonio Ambrosetti and Andrea Malchiodi and Wei-Ming Ni}
}
@article {2003,
	title = {Singularly perturbed elliptic equations with symmetry: existence of solutions concentrating on spheres, Part I},
	journal = {Comm. Math. Phys. 235 (2003) no.3, 427-466},
	number = {SISSA;63/2002/M},
	year = {2003},
	publisher = {Springer},
	doi = {10.1007/s00220-003-0811-y},
	url = {http://hdl.handle.net/1963/1633},
	author = {Antonio Ambrosetti and Andrea Malchiodi and Wei-Ming Ni}
}
@article {2002,
	title = {Solutions concentrating on spheres to symmetric singularly perturbed problems},
	journal = {C.R.Math.Acad.Sci. Paris 335 (2002),no.2,145-150},
	number = {SISSA;23/2002/M},
	year = {2002},
	publisher = {SISSA Library},
	abstract = {We discuss some existence results concerning problems (NLS) and (N), proving the existence of radial solutions concentrating on a sphere.},
	doi = {10.1016/S1631-073X(02)02414-7},
	url = {http://hdl.handle.net/1963/1594},
	author = {Antonio Ambrosetti and Andrea Malchiodi and Wei-Ming Ni}
}
