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\bibitem{RFC-822} Crocker, D., Standard for the Format of ARPA Internet
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\bibitem{NBS} NBS, Message Format for Computer-Based Message Systems,
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\bibitem{CCITT} CCITT Study Group VII/5, Draft Recommendation
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\bibitem{Rose84} Rose, M., Low Tech Connections into the ARPA Internet:
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\bibitem{MMDF} Crocker, D., Szurkowski, E., Farber, D. J., An Internet
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\bibitem{Rose83-1} Rose, M., The ZOTnet---A Local Area Mailing Network,
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\bibitem{MH} Borden, B. S., Gaines, R. S., and Shapiro, N.Z.,
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\end{thebibliography}