Nguyen, Hoi
Tao, Terence
Vu, Van
Funding for this research was provided by:
National Science Foundation (DMS-1358648)
National Science Foundation (DMS-1266164)
National Science Foundation (DMS-1307797)
Article History
Received: 21 April 2015
Revised: 8 January 2016
First Online: 25 January 2016