@article{Impiombato:20096B,
  author = "Impiombato, Domenico",
  title = "{VRIJHK photometry of PKS 0537-441 and PKS 2155-304 in 2006-2008}",
  doi = "10.22323/1.063.0043",
  journal = "PoS",
  year = 2009,
  volume = "BLAZARS2008",
  pages = "043"
}