Barbeiro, Sílvia http://orcid.org/0000-0002-2651-5083
Lobo, Diogo
Funding for this research was provided by:
Centro de Matemática, Universidade de Coimbra (UID/MAT/00324/2019)
Fundação para a Ciência e a Tecnologia (PD/BD/142956/2018)
Article History
Received: 2 August 2019
Accepted: 14 November 2019
First Online: 30 November 2019