1. Associate Professor, Luleå Univ. of Technology, SE-971 87 Luleå, Sweden.
2. Associate Senior Lecturer, Luleå Univ. of Technology, SE-971 87 Luleå, Sweden (corresponding author). ORCID: .
3. Professor, Luleå Univ. of Technology, SE-971 87 Luleå, Sweden.