Kuroki, Scinob http://orcid.org/0000-0002-7585-0099
Nishida, Shin’ya
Article History
Received: 15 December 2017
Accepted: 28 February 2018
First Online: 9 March 2018
Competing Interests
: The authors S.K. and S.N. are employees of Nippon Telegraph and Telephone Communication Science Laboratories, which is a basic-science research section of Nippon Telegraph and Telecommunication. There are no patents, products in development or marketed products to declare.