Local solvability of real vector fields

Principle of similarity for class of complex vector fields

Solvability near the characteristic set for a clas of partial differential operators...

Solvability near the characteristic set for a class of complex vector fields

Asymptotic dynamics of the weakly damped Lamé system with time- dependent variable...

Ultradistributions on torus and applications in certain partial differential equ...

Semiglobal solvability for classes of non-singular vector fields

Hypoellipticity of rotationally invariant differential forms with a singularity

Irrational numbers: 'pi' e e

Existence and regularity of solutions of certain linear PDEs in spaces of ultradifferentiable...