@article{1380729,
 author = {Niebles,, Juan Carlos and Wang,, Hongcheng and Fei-Fei,, Li},
 title = {Unsupervised Learning of Human Action Categories Using Spatial-Temporal Words},
 journal = {Int. J. Comput. Vision},
 volume = {79},
 number = {3},
 year = {2008},
 issn = {0920-5691},
 pages = {299--318},
 doi = {http://dx.doi.org/10.1007/s11263-007-0122-4},
 publisher = {Kluwer Academic Publishers},
 address = {Hingham, MA, USA},
 }