A NONLINEAR VARIATION OF CONSTANTS METHOD FOR INTEGRO DIFFERENTIAL AND INTEGRAL EQUATIONS.BERNFELD SR; LORD ME.1978; APPL. MATH. COMPUT.; U.S.A.; DA. 1978; VOL. 4; NO 1; PP. 1-14; BIBL. 17 REF.Article

MONOTONE METHODS FOR NONLINEAR BOUNDARY VALUE PROBLEMS IN BANACH SPACESBERNFELD SR; LAKSHMIKANTHAM V.1978; CONF. SEMINAR. MAT. UNIV. BARI; ITA; DA. 1978; NO 152; PP. 1-20; BIBL. 17 REF.Serial Issue

MINIMAL AND MAXIMAL SOLUTIONS OF NONLINEAR BOUNDARY VALUE PROBLEMS.BERNFELD SR; CHANDRA J.1977; PACIF. J. MATH.; U.S.A.; DA. 1977; VOL. 71; NO 1; PP. 13-20Article

LINEAR MONOTONE METHOD FOR NONLINEAR BOUNDARY VALUE PROBLEMS IN BANACH SPACESBERNFELD SR; LAKSHMIKANTHAM V.1982; ROCKY MT. J. MATH.; ISSN 0035-7596; USA; DA. 1982; VOL. 12; NO 4; PP. 807-815; BIBL. 15 REF.Article

LIAPUNOV-RAZUMIKHIN FUNCTIONS AND CONVERGENCE OF SOLUTIONS OF FUNCTIONAL DIFFERENTIAL EQUATIONSBERNFELD SR; HADDOCK JR.1979; APPLIC. ANAL.; GBR; DA. 1979; VOL. 9; NO 4; PP. 235-245; BIBL. 10 REF.Article

THE BEHAVIOR OF OSCILLATORY SOLUTIONS OF X''(T)+P(T)G (X(T))=0BERNFELD SR; YORKE JA.1972; S.I.A.M. J. MATH. ANAL.; U.S.A.; DA. 1972; VOL. 3; NO 4; PP. 654-667; BIBL. 8 REF.Serial Issue

THE BOUNDEDNESS AND EXTENDIBALITY OF DIFFERENTIAL SYSTEMS UNDER INTEGRAL PERTURBATIONBERNFELD SR; SHUI NEE CHOW.1972; ANN. MAT. PURA APPL.; ITAL.; DA. 1972; VOL. 94; PP. 377-386; BIBL. 7 REF.Serial Issue

QUASI-INVARIANT MANIFOLDS, STABILITY, AND GENERALIZED HOPF BIFURCATIONBERNFELD SR; NEGRINI P; SALVADORI L et al.1982; ANN. MAT. PURA APPL.; ISSN 0373-3114; ITA; DA. 1982; VOL. 130; PP. 105-119; ABS. ITA; BIBL. 10 REF.Article

EXISTENCE OF SOLUTIONS OF TWO POINT BOUNDARY VALUE PROBLEMS FOR NONLINEAR SYSTEMS.BERNFELD SR; LADDE GS; LAKSHMIKANTHAM V et al.1975; J. DIFFER. EQUATIONS; U.S.A.; DA. 1975; VOL. 18; NO 1; PP. 103-110; BIBL. 4 REF.Article

UNIQUENESS FOR ORDINARY DIFFERENTIAL EQUATIONS.BERNFELD SR; DRIVER RD; LAKSHMIKANTHAM V et al.1975; MATH. SYST. THEORY; U.S.A.; DA. 1975; VOL. 9; NO 4; PP. 359-467; BIBL. 14 REF.Article