On Nonlinear Singular Perturbation Problems with Interior Nonuniformities
R. O'Malley, Jr.
Indiana University Mathematics Journal
1970
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10.1512/iumj.1970.19.19087
10.1512/iumj.1970.19.19087
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Indiana Univ. Math. J. 19 (1970) 1103 - 1112
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