Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (MOST 104-2115-M-001-011-MY2, MOST 104-2115-M-008-003-MY2)
Ministry of Science and Technology, Taiwan (MOST 104-2115-M-001-009-MY2)
National Science Foundation (DMS-1509505)
Article History
Received: 8 November 2016
Revised: 8 March 2018
First Online: 1 June 2018