Convolution product of periodic distributions and the Dirichlet problem on the unit disc Urszula Sztaba — 2000 Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
Even order differential equations with measures as coefficients Urszula Sztaba — 1996 Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica