Kellokumpu, Sakari
Hassinen, Antti
Glumoff, Tuomo
Funding for this research was provided by:
Emil Aaltosen Säätiö
Article History
Received: 9 June 2015
Revised: 28 September 2015
Accepted: 8 October 2015
First Online: 17 October 2015
Free to read: This content has been made available to all.