1. Mass problems and density;Journal of Mathematical Logic;2016-12
2. Peano Arithmetic Models and Computability;Algebraic Computability and Enumeration Models;2016-02-25
3. Model-theoretic properties of turing degrees in the Ershov difference hierarchy;Proceedings of the Steklov Institute of Mathematics;2012-09-19
4. Degree Structures: Local and Global Investigations;Bulletin of Symbolic Logic;2006-09
5. THE THEORY OF THE METARECURSIVELY ENUMERABLE DEGREES;Journal of Mathematical Logic;2006-06