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12.5 References
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D.H. Martin, Finite criteria for conditional definiteness of quad=ratic form. NRIMS Technical Report TWISK 115, Pretoria, August 1979.
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D.H. Martin, M.J.D. Powell and D.H. Jacobson, On the decomposition of conditionally positive semidefinite matrices. forthcoming NRIMS Technical Report.
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J.V. Breakwell and Yu-Chi Ho, On the conjugate point condition for the control problem. Int.J. Engng. Sci., Vol 2, pp 565–579, 1965.
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(1980). Conditional definiteness of quadratic functionals. In: Jacobson, D.H., Martin, D.H., Pachter, M., Geveci, T. (eds) Extensions of Linear-Quadratic Control Theory. Lecture Notes in Control and Information Sciences, vol 27. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0004382
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DOI: https://doi.org/10.1007/BFb0004382
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