1. On the Regularization of Ill-Posed Problems;Tikhonov;Proc. USSR Acad. Sci.,1963
2. Lavrent’ev, M.M. (1962). On Certain Ill-Posed Problems of Mathematical Physics, Sobolev Division of the USSR Academy Science.
3. Ivanov, V.K., Vasin, V.V., and Tanana, V.P. (1978). Theory of Linear Ill-Posed Problem and Application, Nauok.
4. Numerical solution of the equation of heat conduction for preceding times;John;Ann. di Mat. pura ed Appl.,1955
5. Numerical method for the heat equation with Dirichlet and Neumann conditions;Cheniguel;Proc. Int. MultiConference Eng. Comput. Sci.,2014