8 citations
- Bulgarian Academy of SciencesBG1 paper
- INESC TECPT1 paper
- Institute of Mathematics and InformaticsBG1 paper
- Kielce University of TechnologyPL1 paper
- King Abdulaziz UniversitySA1 paper
- Polytechnic Institute of PortoPT1 paper
- Universidad de SalamancaES1 paper
- Universidad de ValladolidES1 paper
- University of CalabriaIT1 paper
- University of MinhoPT1 paper
- University of Trás-os-Montes and Alto DouroPT1 paper
1 paper