The long Galactic bar as seen by UKIDSS Galactic plane surveyA. Cabrera-Lavers, C. González-Fernández, F. Garzón, P. L. Hammersley and M. López-CorredoiraA&A, 491 3 (2008) 781-787DOI: https://doi.org/10.1051/0004-6361:200810720