REFERENCES:

1. Professor Ram S Katiyar

Department of Physics, University of Puerto Rico,
PO Box 23343, San Juan, PR 00931-3343
Tel. (787) 751-4210, Fax: (787) 764-2571
e_mail: [email protected]

2. Dr. Shashi P. Karna

US Air Force Phillips Lab, PL/VTE
Space Electronics Division
3550, Aberdeen Avenue S.E.
Kirtland AFB, NM 87117-5776
Tel. (505) 853-3158

3. Professor Nelson Pena

Department of Physics & Chemistry
University of Puerto Rico at Arecibo, CUTA
P. O. Box 4010, Arecibo, PR 00613
Tel: (787) 878-2830