1. Solutions of Ill-Posed Problems;Arsenin,1997
2. Linear Operator Equations. Approximation and Regularization;Thamban Nair,2009
3. Definitions and examples of inverse and ill-posed problems;Kabanikhin;J. Inverse Ill-Posed Probl.,2008
4. [Reprint from 1923] Lectures on Cauchy’s Problem in Linear Partial Differential Equations;Hadamard,2003
5. Methoden Der Mathematischen Physik, Vol. 2;Courant,1937