Nonexistence of positive solutions to some systems of elliptic inequalities involving grushin operators (Posted on Tháng Sáu 28, 2017)

A trace formula and appilication to stark hamiltonian with non-constant magnetic fields (Posted on Tháng Chín 29, 2015)

Resonances and the spectral shift function for periodic Schrodinger operator with oscillating decaying potential (Posted on Tháng Mười Một 02, 2015)