1. Gdansk University of Tech.,Faculty of Electronics, Telecommunications and Inf.,Gdansk,Poland,80-233
2. School of Science and Engineering, Reykjavik University,Reykjavik,Iceland,102
3. McMaster University,Department of Electrical and Computer Engineering,Hamilton,ON,Canada,L8S 4K1
4. ITESO -Jesuit Univ. of Guadalajara,Department of Electronics, Systems and Inf.,Tlaquepaque,Mexico,45604