@article{38f52715e9a644ec8872446cb9ecdb91,
  title   = "Periodic solutions for a predator-prey model with Holling-type functional response and time delays",
  author  = "Rui Xu and Chaplain, {M. A. J.} and Davidson, {F. A.}",
  note    = "dc.publisher: Elsevier",
  year    = "2005",
  volume  = "161",
  number  = "2",
  pages   = "637--654",
  journal = "Applied Mathematics and Computation",
  issn    = "0096-3003",
}