@article{ETNA_2003__15__a4,
     author = {Chang, B. and Lee, B.},
     title = {A multigrid algorithm for solving the multi-group, anisotropic scattering {Boltzmann} equation using first-order system least-squares methodology},
     journal = {Electronic transactions on numerical analysis},
     pages = {132--151},
     publisher = {mathdoc},
     volume = {15},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2003__15__a4/}
}