[1]  Description of the Globalstar System, Globalstar, L.P. Palo Alto, CA 1997.

[2] F. Leite, Sistemas mundiales de comunicaciones móviles personales: las dificultades técnicas, Actualidades de la UIT, nº6 1996.

[3] D. Maclean, Los GMPCS en el FMPT- Una nueva problemática para la UIT, Actualidades de la UIT, nº6 1996.

[4] S. Helme, Eighteen More Months Before GMPCS Takes To The Skies, Mobile Communications International, January 1997.

[5] F. Rancy, J.P. Taisant, Sistemas de satélites no geoestacionarios, Actualidades de la UIT, nº2 1996

[6]   A. Jamalipour, M. Katayama, Traffic Characteristics of LEOS-Based Global Personal Communications  Networks, IEEE Communications Magazine, February 1997.

[7]     Gilhousen, I. M. Jacobs, R. Padavani, L. A. Weaver, Increased Capacity using CDMA for Mobile Satellite Communications, IEEE journal on Selected Areas in Communications, Vol. 8, No.4, May 1990, p.p. 503-505.

[8]     Branimir R. Vojcic, Laurence B. Mistein, Raymond L. Pickholtz, Total capacity in a Shared CDMA LEOS Environment, IEEE journal on Selected Areas in Communications, Vol. 13, No. 2, February1995,  p.p. 234-235.

[9]     http://www.globalstar.com 

[10]   http://www.wp.com/mcintosh_page_o_stuff/tcomm.html

[11]   http://www.cdg.org/

[12]   http://www.tsacc.ic.gc.ca/TSACC/DOCS/tsacc-96-191.html -

[13]   http://www.cellular.co.za/mobilesatservices.htm

[14]   http://www.gmpcs-us.com/

[15]   http://www.itu.ch/pforum/wtacrepe.htm

[16]   http://www.itu.ch/pforum/document_main_e.htm

[17]  http://www.ee.surrey.ac.uk/Personal/L.Wood/constellations/overview.html#globalstar

[18]  http://www.cannes.aerospatiale.fr/progs/globalstar.html