- Agarwal , R.P. and O'Regan , D. 1997 . Some new existence results for differential and integral equations . Nonlinear Anal. , 29 : 679 – 692 .
- Agarwal , R.P. and Vosmansky , J. 1983 . Two point boundary value problems for second order systems . Archivum Mathematicum (Brno) , 19 : 1 – 8 .
- Agarwal , R.P. , Wong , F.H. and Lian , W.C. 1996 . Existence of positive solutions of nonlinear second order differential systems . Appl. Anal. , 63 : 375 – 387 .
- Bernfeld , S.R. and Lakshmikantham , V. 1974 . An introduction to nonlinear boundary value problems , New York : Academic Press .
- Granas , A. , Guenther , R.B. and Lee , J.W. 1991 . Some general existence principles in the Carathéordory theory of nonlinear systems . Jour. Math. Pures Appl. , 70 : 153 – 196 .
- O'Regan , D. 1997 . Existence theory for nonlinear ordinary differential equations , Dordrecht : Kluwer Academic Publishers .
- Peletier , L.A. and Van Der Vorst , R.C.A.M. 1992 . Existence and nonexistence of positive solutions of nonlinear elliptic systems and the biharmonic equation . Differential and Integral Equations , 5 : 747 – 767 .
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