@InProceedings{white83,
  author =       {Roscoe B. White and Allen H. Boozer and
                  Robert J. Goldston and R. G. Hay and J. Albert and
                  Charles F. F. Karney},
  title =        {Confinement in Toroidal Systems with Partially
                  Destroyed Magnetic Surfaces},
  booktitle =    {Plasma Physics and Controlled Nuclear Fusion Research
                  1982},
  pages =        {391-401},
  year =         1983,
  reprint =      {iaea83b},
  volume =       3,
  publisher =    {IAEA, Vienna},
  note =         {Proc. Ninth International Conf., Baltimore, MD,
                  Sept. 1--8, 1982},
  annote =       {Paper IAEA--CN--41/T--3},
  abstract =     {A Hamiltonian formulation of the guiding centre drift
                  equations valid for stochastic fields is given.
                  Modification of neoclassical transport due to
                  imperfect magnetic surfaces is investigated
                  numerically.  For banana-trapped particles a discrete
                  map representation is given for the orbits and used to
                  study loss of banana-trapped α-particles due to
                  ripple fields.}
}