Tikhonov, Andrey N.
Solutions of ill-posed problems
John Wiley & Sons, 1977
 Buku Teks SO
Letter to the editor: some remarks on a paper by egghe
 Artikel Jurnal
Payne, Lawrence Edward
Improperly posed problems in partial differential equations
Society for Industrial and Applied Mathematics, 1975
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An analysis of the quality of problems posed by students in trigonometry Jaime G.Caballero and Auxencia A.Limjap
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Hansen, Per Christian
Rank-deficient and discrete ill-posed problems: numerical aspects of linear inversion
Society for Industrial and Applied Mathematics, 1998
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