@unpublished{GlebovKiselev2009,
  author  = {S. G. Glebov and O. M. Kiselev},
  title   = {The forced KdV equation and passage through resonance},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Preprint},
  number    = {(2005) 21},
  year    = {2009},
}