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- [1] PROJECTION METHODS AND SINGULAR 2-POINT BOUNDARY-VALUE PROBLEMS NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1973, 20 (07): : A668 - A668
- [7] SINGULAR PERTURBATIONS OF NONLINEAR 2-POINT BOUNDARY-VALUE PROBLEMS NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1973, 20 (07): : A659 - A659