@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}
}
