Espinosa, S. A. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Espinosa, S. A., Southwood, D. J., & Dougherty, M. K. (2003). How can Saturn impose its rotation period in an noncorotating magnetosphere? Journal Geophysical Research, 108(A2): 1086. doi:10.1029/2001JA005084.