... linear functional- differential equations, Arch Math (Brno) 33 (1997), no 3, 197–212 , Boundary Value Problems for Systems of Linear Functional Differential Equations, Folia Facultatis Scientiarium ... Kiguradze and B Puˇ a, On boundary value problems for systems of linear functional- differential equations, Czechoslovak Math J 47(122) (1997), no 2, 341–373 , On periodic solutions of systems of linear ... Scientiarium Naturalium Universitatis Masarykianae Brunensis Mathematica, vol 12, Masaryk University, Brno, 2003 I T Kiguradze and B L Shekhter, Singular boundary value problems for second-order ordinary...