Green's functions and linear boundary value problems

Bates, 1976, Maximization of Green's function over classes of multipoint boundary value problems, SIAM J. Math. Anal., 7, 858, 10.1137/0507069 Bogar, 1978, Effective estimates of invertibility intervals for linear multipoint boundary value problems, J. Differential Equations, 29, 180, 10.1016/0022-0396(78)90119-5 Coppel, 1971, Disconjugacy, 10.1007/BFb0058618 Elias, 1975, Extremal solutions of Ly + p(x)y = 0, J. Math. Anal. Appl., 55, 447, 10.1016/0022-247X(75)90001-3 Gustafson, 1976, A Green's function convergence principle, with applications to computation and norm estimates, Rock Mountain J. Math., 6, 457, 10.1216/RMJ-1976-6-3-457 Gustafson, 1973, Interpolation between consecutive conjugate points of an nth order linear differential equation, Trans. Amer. Math. Soc., 177, 237 Hartman, 1978, Monotony properties and inequalities for Green's functions for multipoint boundary value problems, SIAM. Math. Anal., 9, 806, 10.1137/0509062 Inozemtseva, 1968, The existence and uniqueness of the solution of boundary value problems for ordinary differential equations, Differential Equations, 4, 130 Johnson, 1974, The k-th conjugate point function for an even order linear differential equation, 42, 563 Kim, 1972, On the extremal solutions of nth-order linear differential equations, 33, 62 Kim, 1975, On the first and second conjugate points, Pacific J. Math., 56, 557, 10.2140/pjm.1975.56.557 Levin, 1963, Some problems bearing on the oscillation of solutions of linear differential equations, Soviet Math. Dokl., 4, 121 Pokornyi, 1978, Distribution of zeros of T-extensions, Soviet Math. Dokl., 19, 524 Sherman, 1965, Properties of solutions of nth order linear differential equations, Pacific J. Math., 15, 1045, 10.2140/pjm.1965.15.1045