@article{VanderHulst:20191B, author = "Van der Hulst, Thijs and Oosterloo, Tom and Morganti, Raffaella", title = "{The Westerbork Telescope and Neutral Hydrogen (HI) in the Universe}", doi = "10.22323/1.361.0013", journal = "PoS", year = 2019, volume = "Westerbork", pages = "013" }