Lu, Jianfeng
Moroz, Vitaly
Muratov, Cyrill B.
Funding for this research was provided by:
National Science Foundation (DMS-0908279)
National Science Foundation (DMS-1313687)
National Science Foundation (DMS-1312659)
Article History
Received: 14 October 2014
Accepted: 22 May 2015
First Online: 10 June 2015