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- [33] HELMHOLTZ EQUATION WITH DIFFERENCE APPROXIMATION ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK, 1979, 59 (03): : T36 - T38
- [37] Cauchy problem for the Helmholtz equation ILL-POSED AND NON-CLASSICAL PROBLEMS OF MATHEMATICAL PHYSICS AND ANALYSIS, PROCEEDINGS, 2003, : 143 - 172