@misc{IEEEstd,
title={Graphic Symbols for Electrical and Electronic Diagrams},
note={IEEE Std 315-1975},
institution={IEEE},
year={1975}}

@techreport{KRm4,
author={Kernighan, B. W. and Richie, D. M.},
title={The {M4} Macro Processor},
institution={Bell Laboratories},
year={1977}}

@techreport{KRpic,
author={Kernighan, B. W. and Richie, D. M.},
title={{PIC}---{A} Graphics Language for Typesetting, User Manual},
institution={AT\&T Bell Laboratories},
series={Computing Science Technical Report},
number={116},
year={1991}}

@misc{gpic,
author={The Free Software Foundation},
title={Gpic man page},
year={1992}}

@techreport{dvips,
author={Rokicki, T.},
title={{DVIPS:} {A} {\TeX\ } Driver},
institution={Stanford},
year={1994}}

@misc{mfpic,
author={Leathrum, T.},
title={Pictures in {\TeX\ }with Metafont},
institution={Dartmouth},
year={1992}}

@misc{pstricks,
author={Van Zandt, T.},
title={{PST}ricks User's Guide},
institution={Princeton},
year={1993}}

@misc{Johnstone92,
author={Johnstone, A.},
title={Electronic symbols for \protect{\LaTeX}\ picture mode},
institution={Royal Holloway, University of London},
note={Email:{\tt adrean@cs.rhbnc.ac.uk}},
year={1992}}

@misc{Verwer92,
author={Verwer, N.},
title={Readme for {L}oggates},
institution={Utrecht, Dept. of Computer Science},
note={Email:{\tt nico@cs.ruu.nl}},
year={1992}}

@book{Bentley88,
author={Bentley, J.},
title={More Programming Pearls},
address={New York},
publisher={Addison-Wesley},
year={1988}}