@Article{karney86a,
  author =       {Charles F. F. Karney},
  title =        {Numerical Techniques for the Study of Long-Time
                  Correlations},
  journal =      {Particle Accelerators},
  volume =       19,
  number =       {1--4},
  pages =        {213-221},
  month =        may,
  year =         1986,
  reprint =      {pa86},
  preprint =     {Princeton Univ. Rept. PPPL--2218 (May 1985) 9 pp.},
  eprint =       {nlin.CD/0401035},
  note =         {Proc. Workshop on Orbital Dynamics and Applications to
                  Accelerators, Berkeley, CA, Mar. 7--12, 1985},
  abstract =     {In the study of long-time correlations extremely long
                  orbits must be calculated.  This may be accomplished
                  much more reliably using fixed-point arithmetic.  Use
                  of this arithmetic on the Cray-1 computer is
                  illustrated.
                  <p>Note: This paper introduces the 3-shear method for
                  rotating a bitmap that is used by pnmrotate.}
}