1. School of Mathematics, Statistics and Applied Mathematics, NUI Galway, Galway, Ireland
2. The Insight Centre for Data Analytics, NUI Galway, Galway, Ireland
3. Department of Mathematics and Statistics, National University of Ireland, Maynooth, Maynooth, Co. Kildare, Ireland
4. Departamento de Ciências Exatas, Luiz de Queiroz College of Agriculture - USP, Piracicaba, São Paulo, Brazil