References
- Azbelev NV Maksimov VP Rakhmatullina LF 1991 Introduction to the Theory of Functional Differential Equations Moscow Nauka (in Russian)
- Bravyi , E . 2000 . A note on the Fredholm property of boundary value problems for linear functional differential equations . Memoirs on Differential Equations and Mathematical Physics , 20 : 133 – 135 .
- Kiguradze , I and Pů[zbreve]a , B . 2003 . Boundary value problems for systems of linear functional differential equations . Folia Facultatis Scientiarium Naturalium Universitatis Masarykianae Brunensis. Mathematica , 12
- Kiguradze IT Shekhter BL 1987 Singular boundary value problems for second order ordinary differential equations Itogi Nauki Tekh., Ser. Sovrem. Prob. Mat., Novejshie Dostizh 30 105 201 (in Russian); 1988, English transl.: J. Sov. Math., 43(2), 2340–2417.
- Lomtatidze , A and Vodstr[cbreve]il , P . 2004 . On nonnegative solutions of second order linear functional differential equations . Memoirs on Differential Equations and Mathematical Physics , 32 : 59 – 88 .
- Schwabik [Sbreve]. Tvrdý M Vejvoda O 1979 Differential and integral equations: boundary value problems and adjoints Academia, Praha
- Vodstr[cbreve]il , P . 2004 . On nonnegative solutions of certain nonlocal boundary value problem for second order linear functional differential equations . Georgian Mathematical Journal , 11 ( 3 ) : 583 – 602 .