John, F. (1977). Restrictions on the coefficients of hyperbolic systems of partial differential equations. Proceedings of the National Academy of Sciences - PNAS, 74(10), 4150. https://doi.org/10.1073/pnas.74.10.4150
Citace podle Chicago (17th ed.)John, F. "Restrictions on the Coefficients of Hyperbolic Systems of Partial Differential Equations." Proceedings of the National Academy of Sciences - PNAS 74, no. 10 (1977): 4150. https://doi.org/10.1073/pnas.74.10.4150.
Citace podle MLA (9th ed.)John, F. "Restrictions on the Coefficients of Hyperbolic Systems of Partial Differential Equations." Proceedings of the National Academy of Sciences - PNAS, vol. 74, no. 10, 1977, p. 4150, https://doi.org/10.1073/pnas.74.10.4150.
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