About the Authors

Friedrich Lenz, Rainer Klages
School of Mathematical Sciences, Queen Mary University of London, London, United Kingdom

Aleksei V. Chechkin
Max-Planck Institute for Physics of Complex Systems, Dresden, Germany

Aleksei V. Chechkin
Institute for Theoretical Physics, NSC KIPT, ul. Akademicheskaya 1, Kharkov, Ukraine

Corresponding Author

f.lenz@qmul.ac.uk

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: FL. Wrote the paper: FL AVC RK.