Funding for this research was provided by:
Center for Advanced Mathematical Sciences
conselho nacional de desenvolvimento científico e tecnológico
fundação de amparo pesquisa do estado de são paulo
Austrian Science Fund (I1776)
Qatar National Research Fund (NPRP 7-511-1-098)
Article History
Received: 29 January 2018
Revised: 20 January 2019
First Online: 15 February 2019