3 http://hdl.handle.net/10338.dmlcz/107727 3 A note on regularity for nonlinear elliptic systems http://hdl.handle.net/10338.dmlcz/107736 A note on regularity for nonlinear elliptic systems Some $\lambda $-sequence spaces defined by a modulus http://hdl.handle.net/10338.dmlcz/107735 Some $\lambda $-sequence spaces defined by a modulus A variant of the complex Liouville-Green approximation theorem http://hdl.handle.net/10338.dmlcz/107734 A variant of the complex Liouville-Green approximation theorem The natural operators lifting vector fields to generalized higher order tangent bundles http://hdl.handle.net/10338.dmlcz/107733 The natural operators lifting vector fields to generalized higher order tangent bundles