TY - JOUR AU - Kamachkin, Alexander M. AU - Potapov, Dmitriy K. AU - Yevstafyeva, Victoria V. TI - Non-existence of periodic solutions to non-autonomous second-order differential equation with discontinuous nonlinearity JO - Electronic Journal of Differential Equations PY - 2016 VL - 2016 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_2016__2016__a62/ LA - en ID - EJDE_2016__2016__a62 ER -