@article {barichello2004a,
	title = {Unified Approach for Variable Collision Frequency Models in Rarefied Gas Dynamics},
	journal = {Transport Theory and Sthatistical Physics},
	volume = {33},
	year = {2004},
	note = {n/a},
	pages = {227{\textendash}260},
	abstract = {n/a},
	author = {M. Camargo and Barichello, L.B.}
}
