• ``Orders of input/output differential equations and state space dimensions,'' SIAM J. Control and Optimization, Vol. 33, no. 4, pp. 1102-1126, 1995. (With E. D. Sontag).
• ``Input to state stabilizability for parameterized families of systems,'' International Journal of Robust and Nonlinear Control, Vol. 5, no. 3, pp.187-205,1995. (With Y. Lin and E. D. Sontag).
• ``On characterizations of the input-to-state stability property,'' Systems & Control Letters, Vol. 24, pp. 351-359, 1995. (With E. D. Sontag).
• ``On characterizations of set input-to-state stability,'' in Proceedings of IFAC Non-Linear Control Systems Design Symposium, (NOLCOS '95), Tahoe City, CA, pp. 226-231, 1995. (With E. D. Sontag).
• ``Analytic constraints and realizability for analytic input/output operators,'' IMA Journal of Mathematical Control and Information, Vol. 12, pp.331-346, 1995.
• ``Various results concerning set input-to-state stability,'' in Proc. 34th IEEE Conference on Decision and Control, New Orleans, Dec., 1995 pp 1330-1335. (With Y. Lin and E. D. Sontag).
• ``A Lyapunov formulation of nonlinear small gain theorem for interconnected systems,'' Automatica, Vol. 32, No. 8, pp.1211-1215, 1996. (With Z.-P. Jiang and I. M. Y. Mareels).
• ``A smooth converse Lyapunov theorem for robust stability,'' SIAM Journal on Control and Optimization, Vol. 34, No. 1, pp.124-160, 1996. (With Y. Lin, and E. D. Sontag).
• ``Generalized input/output equations and nonlinear realizability,'' International Journal of Control, Vol. 64, No. 4, pp.615-629, 1996.
• ``Stabilization in spite of matched unmodelled dynamics and an equivalent definition of input-to-state stability,'' Mathematics of Control, Signals, and Systems, Vol. 9, pp.1-33, 1996. (With L. Praly).
• "New Characterizations of the input to state stability property", IEEE Trans. Automat. Contr., Vol. 41, pp.1283--1294, 1996. (With E. D. Sontag).
• "Detectability of nonlinear systems", in Proc. Conference on Information Science and Systems (CISS 96), Princeton, NJ, pp. 1031-1036,1996. (With E. D. Sontag).
• "A converse Lyapunov theorem with applications to ISS-disturbance attenuation", in Proc. 13th IFAC World Congress (IFAC'96), San Francisco, pp.226-231, July, 1996.
• "Output-to-state stability and detectability of nonlinear systems", Systems & Control Letters, Vol. 29, No. 5, pp.279--290, 1997. (With E. D. Sontag).
• "A notion of input to output stability", { Proc. European Control Conf.} (ECC'97) , Brussels, July 1997, Paper WE-E A2, CD-ROM file ECC958.pdf, 6 pages. (With E. D. Sontag).
• "A Remark on integral input to state stability", Proc. IEEE Conf. Decision and Control, Tampa, Dec. 1998, pp.2491--2496. (With D. Angeli and E. D. Sontag).
• "Input-to-state stability for discrete-time nonlinear systems", in Proc. 14th IFAC World Congress (IFAC'99), Vol. E, pp. 277--282, 1999. (With Z. P. Jiang and E. D. Sontag).
• "A characterization of integral input to state stability," IEEE Transactions on Automatic Control, to appear. (With D. Angeli and E.D. Sontag).
• "On integral-input-to-state stabilization", Proc. of American Control Conference (ACC'99), pp.1598--1620. (With D. Liberzon and E. D. Sontag).
• "Notions of input to output stability", Systems & Control Letters, to appear. (With E. D. Sontag).
• "Lyapunov characterizations of input to output stability", submitted. (With E. D. Sontag).
• ``A converse Lyapunov theorem and input-to-state stability properties for discrete-time nonlinear systems'', submitted. (With Z.P.Jiang).
• ``Lyapunov characterizations of input-output-to-state stability'', Proc. 38th IEEE Conf. Decision and Control (CDC'99), to appear. (With M. Krichman and E. D. Sontag).
• ``Remarks on input to output stability'', Proc. 38th IEEE Conf. Decision and Control (CDC'99) , to appear. (With B. Ingalls and E. D. Sontag).
• ``Further equivalences and semiglobal versions of integral input to state stability'', submitted. (With D.Angeli and E.D.Sontag).
• "Input-output-to-state stability", submitted. (With M.Krichman and E.D.Sontag).
  

Online Papers:

• ``On two definitions of observation spaces,'' Systems and Control Letters, Vol. 13, pp. 279-289, 1989. (With E. D. Sontag). (ps file)
• ``Pole shifting for families of linear systems depending on at most three parameters,'' Linear Algebra and Its Applications, Vol. 138, pp. 3-38, 1990. (With E. D. Sontag). (ps file)
• ``Algebraic differential equations and rational control systems,'' SIAM J. Control and Optimization , Vol. 30, pp. 1126-1149, September 1992. (With E. D. Sontag). (ps file)
• ``Generating series and nonlinear systems: Analytic aspects, local realizability and i/o representations,'' Forum Mathematicum , Vol. 4, pp. 299-322, 1992. (With E. D. Sontag). (ps file)
• ``Input to state stabilizability for parameterized families of systems,'' International Journal of Robust and Nonlinear Control , Vol. 5, no. 3, pp.187-205, 1995. (With Y. Lin and E. D. Sontag). (ps file)
• ``On characterizations of the input-to-state stability property,'' Systems & Control Letters , Vol. 24, pp. 351-359, 1995. (With E. D. Sontag). (ps file)
• ``Analytic constraints and realizability for analytic input/output operators,'' IMA Journal of Mathematical Control and Information , Vol. 12, pp. 331-346, 1995. (ps file)
• ``Orders of input/output differential equations and state space dimensions,'' SIAM J. Control and Optimization , Vol. 33, No. 4, pp. 1102-1126, 1995. (With E. D. Sontag). (ps file)
• ``A smooth converse Lyapunov theorem for robust stability,'' SIAM Journal on Control and Optimization , Vol. 34, No. 1, pp.124-160, 1996. (With Y. Lin, and E. D. Sontag). (ps file)
• ``A Lyapunov formulation of nonlinear small gain theorem for interconnected systems,'' Automatica, Vol.32, No.8, pp.1211-1215. (With Z.-P. Jiang and I. M. Y. Mareels). (ps file)
• ``Generalized input/output equations and nonlinear realizability,'' International Journal of Control , Vol. 64, No. 4, pp.615-629, 1996. (ps file)
• ``Stabilization in spite of matched unmodelled dynamics and an equivalent definition of input-to-state stability,'' Mathematics of Control, Signals, and Systems , Vol. 9, pp.1-33, 1996. (With L. Praly). (ps file)
• ``A converse Lyapunov theorem with applications to ISS-disturbance attenuation,'' Proc. 13th IFAC World Congress , Vol.E, pp.79--84, 1996. (ps file)
• "New Characterizations of the input to state stability property", IEEE Trans. Automat. Contr., Vol. 41, pp.1283--1294, 1996. (With E. D. Sontag). (ps file)
• "Output-to-State Stability and Detectability of Nonlinear Systems", Systems & Control Letters , Vol.29, pp.279-290, 1997. (With E. D. Sontag). (ps file)
• "A characterization of integral input to state stability," IEEE Transactions on Automatic Control , to appear. (With D. Angeli and E.D. Sontag). (ps file)
• ``On integral-input-to-state stabilization", Proc. of American Control Conference (ACC'99) , pp.1598--1620. (With D. Liberzon and E. D. Sontag). (ps file)
• ``Notions of input to output stability", Systems & Control Letters , to appear. (With E. D. Sontag). (ps file)
• ``Lyapunov characterizations of input to output stability", submitted. (With E.D.Sontag). (ps file)
• ``A converse Lyapunov theorem and input-to-state stability properties for discrete-time nonlinear systems'', submitted. (With Z.P.Jiang). (ps file)
• ``Further equivalences and semiglobal versions of integral input to state stability'', submitted. (With D.Angeli and E.D.Sontag). (ps file)
• "Input-output-to-state stability", submitted. (With M.Krichman and E.D.Sontag). (ps file)