About the Authors

Vygintas Gontis

vygintas@gontis.eu

Affiliation Institute of Theoretical Physics and Astronomy, Vilnius University, Vilnius, Lithuania

Aleksejus Kononovicius

Affiliation Institute of Theoretical Physics and Astronomy, Vilnius University, Vilnius, Lithuania

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: VG AK. Contributed to the writing of the manuscript: VG AK. Designed the software used in analysis: AK.