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- [2] RATIONAL SOLUTIONS OF LINEAR-DIFFERENTIAL AND DIFFERENCE-EQUATIONS WITH POLYNOMIAL COEFFICIENTS USSR COMPUTATIONAL MATHEMATICS AND MATHEMATICAL PHYSICS, 1989, 29 (06): : 7 - 12
- [3] APPROXIMATION BY RATIONAL POLYNOMIALS OF SOLUTIONS FOR LINEAR-DIFFERENTIAL EQUATIONS WITH POLYNOMIAL COEFFICIENTS DOPOVIDI AKADEMII NAUK UKRAINSKOI RSR SERIYA A-FIZIKO-MATEMATICHNI TA TECHNICHNI NAUKI, 1977, (05): : 392 - 395