M-matrices and convergence of finite difference Scheme for parabolic equation with integral boundary condition. - Regimantas Ciupaila; Mifodijus Sapagovas; Kristina Pupalaige (Math. Model. Anal., 2020)

Nonlinear Elliptic equation with nonlocal integral boundary condition depending on two parameters. - Kristina Pupalaige; Mifodijus Sapagovas; Regimantas Ciupaila (Math. Model. Anal., 2022)

On the spectrum Structure for One difference eigenvalue Problem with nonlocal boundary conditions. - Mifodijus Sapagovas; Kristina Pupalaige; Regimantas Ciupaila; Tadas Meskauskas (Math. Model. Anal., 2023)