@Article{npg-14-17-2007,
AUTHOR = {Chian, A. C.-L. and Santana, W. M. and Rempel, E. L. and Borotto, F. A. and Hada, T. and Kamide, Y.},
TITLE = {Chaos in driven Alfvén systems: unstable periodic orbits and chaotic saddles},
JOURNAL = {Nonlinear Processes  in Geophysics},
VOLUME = {14},
YEAR = {2007},
NUMBER = {1},
PAGES = {17--29},
URL = {http://www.nonlin-processes-geophys.net/14/17/2007/},
DOI = {10.5194/npg-14-17-2007}
}