@inproceedings{Oosterloo:2011YH,
  author = "Oosterloo, Tom  and  Verheijen, Marc A.W.  and  Van Cappellen, W.  and  Bakker, L.  and  Heald, George  and  Ivashina, M.",
  title = "{Apertif - the focal-plane array system for the WSRT}",
  doi = "10.22323/1.132.0070",
  booktitle = "Proceedings of Wide Field Astronomy & Technology for the Square Kilometre Array {\textemdash} PoS(SKADS 2009)",
  year = 2011,
  volume = "132",
  pages = "070"
}