- The approximate and the Clarke subdifferentials can be different everywhere2008 | Faculty of Mathematics and Physics
- Smallness of Singular Sets of Semiconvex Functions in Separable Banach Spaces2013 | Faculty of Mathematics and Physics
- Singular points of order k of Clarke regular and arbitrary functions2012 | Faculty of Mathematics and Physics
- Generic Frechet Differentiability on Asplund Spaces via A.E. Strict Differentiability on Many Lines2012 | Faculty of Mathematics and Physics