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title = {{The H 2 O Southern Galactic Plane Survey: {NH} 3 (1,1) and (2,2) catalogues}},  journal = {Monthly Notices of the Royal Astronomical Society},  }  @article{Walsh_2011,  doi = {10.1111/j.1365-2966.2011.19115.x},  url = {http://dx.doi.org/10.1111/j.1365-2966.2011.19115.x},  year = {2011},  month = {jun},  publisher = {Oxford University Press ({OUP})},  volume = {416},  number = {3},  pages = {1764--1821},  author = {A. J. Walsh and S. L. Breen and T. Britton and K. J. Brooks and M. G. Burton and M. R. Cunningham and J. A. Green and L. Harvey-Smith and L. Hindson and M. G. Hoare and B. Indermuehle and P. A. Jones and N. Lo and S. N. Longmore and V. Lowe and C. J. Phillips and C. R. Purcell and M. A. Thompson and J. S. Urquhart and M. A. Voronkov and G. L. White and M. T. Whiting},  title = {{The H2O Southern Galactic Plane Survey ({HOPS}) - I. Techniques and H2O maser data}},  journal = {Monthly Notices of the Royal Astronomical Society},  }