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Journal of Computational and Applied Mathematics > 1999 > 109 > 1-2 > 475-491
General Relativity and Gravitation > 1997 > 29 > 10 > 1257-1268
Journal of Computational and Applied Mathematics > 1999 > 109 > 1-2 > 475-491
General Relativity and Gravitation > 1997 > 29 > 10 > 1257-1268