Before revision: W. Kang, ``Rate of Convergence for the Legendre Pseudospectral Optimal Control of Feedback Linearizable Systems, Journal of Control Theory and Application, Vol.8, No.4, 2010. pp.391-405.
After revision: <ref name = "kang-2010">W. Kang, ``Rate of Convergence for the Legendre Pseudospectral Optimal Control of Feedback Linearizable Systems, Journal of Control Theory and Application, Vol.8, No.4, 2010. pp.391-405.