Mäkinen, J. T. http://orcid.org/0000-0002-9198-1048
Dmitriev, V. V.
Nissinen, J.
Rysti, J.
Volovik, G. E.
Yudin, A. N.
Zhang, K.
Eltsov, V. B.
Article History
Received: 29 August 2018
Accepted: 21 December 2018
First Online: 16 January 2019
Competing interests
: The authors declare no competing interests.