Einaga, Mari
Sakata, Masafumi
Ishikawa, Takahiro
Shimizu, Katsuya http://orcid.org/0000-0003-0560-8325
Eremets, Mikhail I.
Drozdov, Alexander P.
Troyan, Ivan A.
Hirao, Naohisa
Ohishi, Yasuo
Article History
Received: 9 September 2015
Accepted: 12 April 2016
First Online: 9 May 2016
Competing interests
: The authors declare no competing financial interests.