@article{HM20a,
	author   = {M.~Herrmann and K.~Matthies},
	title    = {Nonlinear and nonlocal eigenvalue problems: variational existence, decay properties, approximation, and universal scaling limits},
	pages    = {4046–4074},
	volume   = {33},
	number   = {8}
	journal  = {Nonlinearity}
	year     = {2020},
	doi      = {10.1088/1361-6544/ab8350}