1. College of Staten Island, 2800 Victory Blvd.,Department of Eng. and Env. Sci.,Staten Island,NY,USA,10314
2. University of Zaragoza, Mariano Esquillor Gomez,Photonics Tech. Group (GTF),Zaragoza,Spain,E-50018
3. The City College of New York, 160 Convent Ave.,Department of Elec. Eng.,New York,NY,USA,10031