# References

1. Luca Cardelli, James Donahue, Lucille Glassman, Mick Jordan, Bill Kalsow, and Greg Nelson. Modula-3 Report (revised). Research Report 52, Digital Systems Research Center, November 1989.
2. Sam Harbison. Programming with Modula-3. Prentice Hall, Englewood Cliffs, New Jersey, 1991.
3. Adobe Systems Incorporated. Postscript Language Reference Manual. Addison Wesley, 1985.
4. Greg Nelson, editor. Systems Programming with Modula-3. Prentice Hall, Englewood Cliffs, New Jersey, 1991.
5. Robert W. Scheifler, James Gettys, and Ron Newman. X Window System, 2nd edition. Digital Press, 1990.
6. Charles P. Thacker and Lawrence C. Stewart. Firefly: a multiprocessor workstation. IEEE Transactions on Computers. 37(8):909-920, August 1988.