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"Internet Telephony - The Regulatory Issues", H. Intven, M. Zohar & J. Howard, McCarthy Tétrault "Internet Voice Telephony Developments", Organization for Economic Cooperation and Development (OECD)
"Internet Telephony - The Regulatory Issues", H. Intven, M. Zohar & J. Howard, McCarthy Tétrault
"Internet Voice Telephony Developments", Organization for Economic Cooperation and Development (OECD)
"Internet Telephony: Costs, Pricing, and Policy" [PDF], L.W. McKnight & B.A. Leida, Massachussetts Institute of Technology (MIT)
ITU 1999 Telecommunications Regulatory Survey (Extract: Internet Telephony and Call-Back Services) OECD Regulatory Overview of the Telecommunications and Broadcasting Sectors
ITU 1999 Telecommunications Regulatory Survey (Extract: Internet Telephony and Call-Back Services)
OECD Regulatory Overview of the Telecommunications and Broadcasting Sectors
United States Office of Telecommunications - IP Telephony Market Information Cybertelecom.org Internet Telephony Page
United States Office of Telecommunications - IP Telephony Market Information
Cybertelecom.org Internet Telephony Page