References

Reference letters can be requested from the following researchers:

Prof. Dr. Jan Kristensen

University of Oxford

Mathematical Institute

Andrew Wiles Building, Radcliffe Observatory Quarter OX2 6HG, Oxford, United Kingdom.

Prof. Dr. Lars Diening

University of Bielefeld

Faculty of Mathematics

Postfach 10 01 31
33501 Bielefeld, Germany

Prof. Dr. Herbert Koch

University of Bonn

Mathematical Institute

Endenicher Allee 60,

53115 Bonn, Germany

Prof. Dr. Gregory Seregin

University of Oxford

Mathematical Institute

Andrew Wiles Building, Radcliffe Observatory Quarter OX2 6HG, Oxford, United Kingdom.