Geometrical Methods for Determining the Accuracy of Approximate Solutions of the Boltzmann Equation Part I. One-Group Scattering and Absorbing Media
R. Ackroyd
Indiana University Mathematics Journal
1962
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10.1512/iumj.1962.11.11044
10.1512/iumj.1962.11.11044
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Indiana Univ. Math. J. 11 (1962) 811 - 850
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