@article {barichello1995b,
	title = {An Analytical Solution for the Multigroup Slab Geometry Discrete Ordinates Problems},
	journal = {Transport Theory and Statistical Physics},
	volume = {24},
	year = {1995},
	note = {n/a},
	pages = {1029{\textendash}1037},
	abstract = {n/a},
	author = {M. T. Vilhena and Barichello, L.B.}
}
