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Thompson, J.F.; Thames, F.C.; Mastin, C.W. (1974). "Automatic Numerical Generation of Body-fitted Curvilinear Coordinate System for Field Containing any Number of Arbitrary Two-Dimensional Bodies". J. Comput. Phys. 15 (3): 299–319. Bibcode:1974JCoPh..15..299T. doi:10.1016/0021-9991(74)90114-4.