"Peter was the internet's great champion in Europe," said Vinton G. Cerf, an American internet pioneer who was a developer of TCP/IP and a colleague and friend of Professor Kirstein's. "With skill and finesse, he resisted enormous pressure to adopt alternatives." Professor Kirstein was so avid a fan of computer networking that he gave Queen Elizabeth II her own email address, HME2. In 1976, while christening a telecommunications research center in Malvern, England, the queen became one of the first heads of state to send an email.
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