@book{15839,
	author = {Conference on "Nonlinear Problens in the Physical Sciences and Biology", Battelle Summer Institute, Seattle, July 3-28, 1972. and Stakgold, Ivar ; ed.},
	title = {Nonlinear problems in the physical sciences and biology; proceedings},
	publisher = {Springer-Verlag},
	year = {1973},
	address = {Berlin}
}