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- [3] POWERSERIES BOUNDARY LAYER IN PROBLEMS INVOLVING A SMALL PARAMETER DOKLADY AKADEMII NAUK SSSR, 1963, 148 (03): : 516 - &
- [4] SOME PROBLEMS OF OPTIMAL CONTROL WITH A SMALL PARAMETER PMM JOURNAL OF APPLIED MATHEMATICS AND MECHANICS, 1968, 32 (01): : 12 - +
- [5] THE ASYMPTOTIC BEHAVIOUR OF SOLUTIONS TO SOME BOUNDARY PROBLEMS FOR QUASILINEAR EQUATIONS INVOLVING A SMALL PARAMETER IN THE HIGHEST DERIVATIVE TERM DOKLADY AKADEMII NAUK SSSR, 1958, 123 (04): : 583 - 586
- [8] A NONLINEAR DIFFERENTIAL EQUATION INVOLVING CHARACTERISTIC VALUES ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK, 1967, 47 (07): : 473 - &