The effective Hamiltonian for thin layers with non-Hermitian Robin-type boundary conditions. - Denis I. Borisov; David Krejcirík (Asymptot. Anal., 2012)

Waveguides with asymptotically diverging twisting. - David Krejcirík (Appl. Math. Lett., 2015)

Complex Magnetic Fields: An Improved Hardy-Laptev-Weidl Inequality and Quasi-Self-Adjointness. - David Krejcirík (SIAM J. Math. Anal., 2019)

On the Two-Dimensional Quantum Confined Stark Effect in Strong Electric Fields. - Horia D. Cornean; David Krejcirík; Thomas G. Pedersen; Nicolas Raymond; Edgardo Stockmeyer (SIAM J. Math. Anal., 2022)

A Sharp Form of the Discrete Hardy Inequality and the Keller-Pinchover-Pogorzelski Inequality. - David Krejcirík; Frantisek Stampach (Am. Math. Mon., 2022)