Hening, Alexandru
Nguyen, Dang H.
Ungureanu, Sergiu C.
Wong, Tak Kwong
Funding for this research was provided by:
University of Hong Kong (201702159009)
Directorate for Mathematical and Physical Sciences (DMS-1207667)
Article History
Received: 28 March 2018
Revised: 11 July 2018
First Online: 4 August 2018