@article {Ramlau:2002:0266-5611:381,
	author = "Ramlau R.",
	title = "A steepest descent algorithm for the global minimization of the Tikhonov functional",
	journal = "Inverse Problems",
	volume = "18",
	year = "2002",
	abstract = "<P>We report on a new iterative approach for finding a global minimizer of the Tikhonov functional with a special class of nonlinear operators <I>F</I>. Assuming that the operator itself can be decomposed into (or approximated by) a sum of a linear and a bilinear operator, we introduce a two-step iteration scheme based on an outer iteration over the regularization parameter <I></I> and an inner iteration with a steepest descent method. Finally we present numerical results for the reconstruction of the emission function in single-photon emission computed tomography.</P>",
	pages = "381-403(23)",
	url = "http://www.ingentaconnect.com/content/iop/ip/2002/00000018/00000002/art00306"
}