@InProceedings{LanguascoZaccagnini2016b,
  Author    = "A. Languasco and A. Zaccagnini",
  Title     = "A {Diophantine} problem with prime variables",
  Booktitle = "Proceedings of the ``International Meeting in Number Theory,''
               celebrating the 60th birthday of Prof.~R.~Balasubramanian,
               Harish-Chandra Research Institute, Allahabad, Dec.~2011",
  Editor    = "V. Kumar Murty and D. S. Ramana and R. Thangadurai",
  Series    = "Ramanujan Mathematical Society--Lecture Notes Series",
  Volume    = 23,
  Pages     = "157---168",
  Note      = "Arxiv preprint 1206.0252",
  Url       = "\url{http://arxiv.org/abs/1206.0252}",
  Year      = 2016
}