ON THE ABSOLUTE STABLE DIFFERENCE SCHEME FOR THE SPACE-WISE DEPENDENT SOURCE IDENTIFICATION PROBLEM FOR ELLIPTIC-TELEGRAPH EQUATION Статья Ashyralyev A., Al-Hammouri A., Ashyralyyev C. Numerical Methods for Partial Differential Equations. John Wiley and Sons Inc.. 2020.
FUNDAMENTAL MODE EXACT SCHEMES FOR UNSTEADY PROBLEMS Статья Vabishchevich P.N. Numerical Methods for Partial Differential Equations. John Wiley and Sons Inc.. Том 34. 2018. С. 2301-2315