BulDML at Institute of Mathematics and Informatics > IMI > IMI Periodicals > Bulletin de l'Institut de Mathématiques >
On some boundary problems for the equation Uxx + sign Y Uyy = 0. II
On the permanent rotations of a gyrostat in a Newtonian central force field
Analytic transformations which increase the volume and Bergmann's function
Conformal mapping between ruled surfaces
On Cauchy's problem for the general ultraparabolic equation