@article { WOS:000370150500001,
	title = {Variational Estimates of the Spectral Gap and Eigenvalue Spectra of the Linearized and Linear Boltzmann Hard Sphere Collision Operators},
	journal = {JOURNAL OF COMPUTATIONAL AND THEORETICAL TRANSPORT},
	volume = {44},
	number = {6-7},
	year = {2015},
	pages = {231-253},
	issn = {2332-4309},
	doi = {10.1080/23324309.2015.1086804},
	author = {Shizgal, Bernie D.}
}
