In this note, higher order self-adjoint differential expressions on time scales, and associated with them self-adjoint boundary conditions, are discussed. The symmetry peoperty of the corresponding Green's functions is emphasized.
GUSEINOV, GUSEIN SH. (2005) "Self-Adjoint Boundary Value Problems on Time Scales and Symmetric Green's Functions," Turkish Journal of Mathematics: Vol. 29: No. 4, Article 3. Available at: https://journals.tubitak.gov.tr/math/vol29/iss4/3