1. Morozov, V. A.: Methods for solving incorrectly posed problems. New York: Springer 1984
2. Groetsch, C. W.: The theory of Tikhonov regularization for Fredholm equations of the first kind. Boston: Pitman 1984
3. Gull, S. F.; Skilling, J.; I.E.E. Proc. 1984, 131F, 646
4. Provencher, S. W.: Contin (Version 2) users manual. Technical Report EMBL-DA07. Computer Physics Communications Program Library. Queen's University of Belfast, 1984
5. Provencher, S. W.: Comput. Phys. Commun. 27 (1982) 213