@article{SIGMA_2014_10_a18,
     author = {Yuan Xu},
     title = {Tight {Frame} with {Hahn} and {Krawtchouk} {Polynomials} of {Several} {Variables}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2014},
     volume = {10},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2014_10_a18/}
}