1. Department of Applied Statistics and Linz Institute of Technology, Johannes Kepler University, Linz, Austria;
2. Department of Statistics, University of Valparaiso, Valparaíso, Chile;
3. School of Mathematics and Statistical Sciences, Arizona State University, Tempe, Arizona;
4. Departamento de Matemática, Facultad de Ciencias, Universidad de Tarapacá, Arica, Chile;
5. Institute of Computer Science of the Czech Academy of Sciences, Prague;
6. Faculty of Mathematics and Informatics, Shumen University, Bulgaria;
7. Departamento de Salud Pública, Pontificia Universidad Católica de Chile, Santiago, Chile;
8. Institute of Mathematics, Faculty of Science, P. J. Šafárik University, Košice, Slovakia