@article {Schuele-et-al-04a,
	title = {Discrete Tomography By Convex-Concave Regularization and D.C. Programming},
	journal = {Discr. Appl. Math.},
	volume = {151},
	year = {2005},
	month = {Oct},
	pages = {229-243},
	author = {Sch{\"u}le, T. and Schn{\"o}rr, C. and Weber, S. and Hornegger, J.}
}
