References

   [US-ASCII] Coded Character Set--7-Bit American Standard Code for
   Information Interchange, ANSI X3.4-1986.

   [ATK] Borenstein, Nathaniel S., Multimedia Applications Development
   with the Andrew Toolkit, Prentice-Hall, 1990.

   [GIF] Graphics Interchange Format (Version 89a), Compuserve, Inc.,
   Columbus, Ohio, 1990.

   [ISO-2022] International Standard--Information Processing--ISO 7-bit
   and 8-bit coded character sets--Code extension techniques, ISO
   2022:1986.

   [ISO-8859] Information Processing -- 8-bit Single-Byte Coded Graphic
   Character Sets -- Part 1: Latin Alphabet No. 1, ISO 8859-1:1987.  Part
   2: Latin alphabet No.  2, ISO 8859-2, 1987.  Part 3: Latin alphabet
   No. 3, ISO 8859-3, 1988.  Part 4: Latin alphabet No.  4, ISO 8859-4,
   1988.  Part 5: Latin/Cyrillic alphabet, ISO 8859-5, 1988.  Part 6:
   Latin/Arabic alphabet, ISO 8859-6, 1987.  Part 7: Latin/Greek
   alphabet, ISO 8859-7, 1987.  Part 8: Latin/Hebrew alphabet, ISO
   8859-8, 1988.  Part 9: Latin alphabet No. 5, ISO 8859-9, 1990.

   [ISO-646] International Standard--Information Processing--ISO 7-bit
   coded character set for information interchange, ISO 646:1983.

   [MPEG] Video Coding Draft Standard ISO 11172 CD, ISO IEC/TJC1/SC2/WG11
   (Motion Picture Experts Group), May, 1991.

   [PCM] CCITT, Fascicle III.4 - Recommendation G.711, Geneva, 1972,
   "Pulse Code Modulation (PCM) of Voice Frequencies".

   [POSTSCRIPT] Adobe Systems, Inc., PostScript Language Reference
   Manual, Addison-Wesley, 1985.

   [POSTSCRIPT2] Adobe Systems, Inc., PostScript Language Reference
   Manual, Addison-Wesley, Second Edition, 1990.

   [X400] Schicker, Pietro, "Message Handling Systems, X.400", Message
   Handling Systems and Distributed Applications, E.  Stefferud, O-j.
   Jacobsen, and P.  Schicker, eds., North-Holland, 1989, pp. 3-41.

   [RFC-783] Sollins, K., "TFTP Protocol (revision 2)", RFC 783, MIT,
   June 1981.

   [RFC-821] Postel, J., "Simple Mail Transfer Protocol", STD 10, RFC
   821, USC/Information Sciences Institute, August 1982.

   [RFC-822] Crocker, D., "Standard for the Format of ARPA Internet Text
   Messages", STD 11, RFC 822, UDEL, August 1982.

   [RFC-934] Rose, M., and E. Stefferud, "Proposed Standard for Message
   Encapsulation", RFC 934, Delaware and NMA, January 1985.

   [RFC-959] Postel, J. and J. Reynolds, "File Transfer Protocol",
   STD 9, RFC 959, USC/Information Sciences Institute, October 1985.

   [RFC-1049] Sirbu, M., "Content-Type Header Field for Internet
   Messages", STD 11, RFC 1049, CMU, March 1988.

   [RFC-1421] Linn, J., "Privacy Enhancement for Internet Electronic Mail:
   Part I - Message Encryption and Authentication Procedures", RFC
   1421, IAB IRTF PSRG, IETF PEM WG, February 1993.

   [RFC-1154] Robinson, D. and R. Ullmann, "Encoding Header Field for
   Internet Messages", RFC 1154, Prime Computer, Inc., April 1990.

   [RFC-1341] Borenstein, N., and N.  Freed, "MIME (Multipurpose Internet
   Mail Extensions): Mechanisms for Specifying and Describing the Format
   of Internet Message Bodies", RFC 1341, Bellcore, Innosoft, June 1992.

   [RFC-1342] Moore, K., "Representation of Non-Ascii Text in Internet
   Message Headers", RFC 1342, University of Tennessee, June 1992.

   [RFC-1343] Borenstein, N., "A User Agent Configuration Mechanism
   for Multimedia Mail Format Information", RFC 1343, Bellcore, June
   1992.

   [RFC-1344] Borenstein, N., "Implications of MIME for Internet
   Mail Gateways", RFC 1344, Bellcore, June 1992.

   [RFC-1345] Simonsen, K., "Character Mnemonics & Character Sets",
   RFC 1345, Rationel Almen Planlaegning, June 1992.

   [RFC-1426] Klensin, J., (WG Chair), Freed, N., (Editor), Rose, M.,
   Stefferud, E., and D. Crocker, "SMTP Service Extension for 8bit-MIME
   transport", RFC 1426, United Nations Universit, Innosoft, Dover Beach
   Consulting, Inc., Network Management Associates, Inc., The Branch
   Office, February 1993.

   [RFC-1522] Moore, K., "Representation of Non-Ascii Text in Internet
   Message Headers" RFC 1522, University of Tennessee, September 1993.

   [RFC-1340] Reynolds, J., and J. Postel, "Assigned Numbers", STD 2, RFC
   1340, USC/Information Sciences Institute, July 1992.