Bessa, Mário http://orcid.org/0000-0002-1758-2225
Carvalho, Maria http://orcid.org/0000-0001-6929-6442
Rodrigues, Alexandre A. P. http://orcid.org/0000-0001-8182-9889
Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (IF/00107/2015, UID/MAT/00144/2019)
Fundação para a Ciência e a Tecnologia (UID/MAT/00212/2013)
Nizhny Novgorod University (RNF 14-41-00044)
Article History
Received: 13 December 2018
Accepted: 9 November 2019
First Online: 30 January 2020