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STABILITY OF ALMOST PERIODIC SOLUTIONS OF AN AUTONOMOUS EQUATION.CHANG KW.1975; BULL. CANAD. MATH.; CANADA; DA. 1975; VOL. 18; NO 5; PP. 639-641; BIBL. 3 REF.Article

SINGULAR PERTURBATIONS OF A BOUNDARY PROBLEM FOR A VECTOR SECOND ORDER DIFFERENTIAL EQUATION.CHANG KW.1976; S.I.A.M. J. APPL. MATH.; U.S.A.; DA. 1976; VOL. 30; NO 1; PP. 42-54; BIBL. 12 REF.Article