1. University of Colorado Colorado Springs, Colorado Springs, CO, USA
2. University of Texas at Arlington, Arlington, TX, USA
3. Colorado State University, Fort Collins, CO, USA
4. Faculty of Science, Technology, Medicine (FSTM), University of Luxembourg, Esch-sur-Alzette, Luxembourg
5. National Research Council of Italy, Institute of Electronics, Computer, Telecommunication Engineering (CNR-IEIIT), Turin, Italy