?url_ver=Z39.88-2004&rft_id=10.1186%2F2044-7248-3-s1-p3&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Castro%2C+JB&rft.aulast=Castro&rft.aufirst=JB&rft.issue=S1&rft.volume=3&rft.date=April+2014&rft.atitle=Categorical%2C+low-dimensional+decomposition+of+human+odor+space+with+non-negative+matrix+factorization&rft.title=Flavour&rft.genre=article