Brian J. Driessen
 H. Berghuis and H. Nijmeijer, Observer design in the tracking control problem for robots, Proc. 2nd IFAC Symp. on Nonlinear Control Systems Design, June 24–26, Bordeaux, France, 1992, 197–202.
 H. Berghuis and H. Nijmeijer, A passivity approach tocontroller–observer design for robots, IEEE Transactions onRobotics and Automation, 9, 1993, 740–754.
 C. Canudas de Wit and R. Kelly, Passivity analysis of a motion control for robot manipulators with dynamic friction, Asian Journal of Control, 9(1), 2007, 30–36.
 J.J. Craig, Introduction to robotics, 2nd ed. (Reading, MA: Addison-Wesley, 1989).
 M.S. de Queiroz, D. Dawson, and T. Burg, Position/forcecontrol of robot manipulators without velocity/force measurements, International Journal of Robotics and Automation, 12(1), 1997, 1–14.
 G.H. Golub and C.F. Van Loan, Matrix computations, 2nd ed. (London: The Johns Hopkins University Press, 1989).
 M. Krstic, I. Kanellakopoulos, and P. Kokotovic, Nonlinear and adaptive control design (New York: John Wiley & Sons, Inc., 1995).
 Y.L. Lim, D.M. Dawson, and K. Anderson, Re-examining the Nicosia-Tomei robot observer–controller from a backstepping perspective, IEEE Transactions on Control Systems Technology, 4(3), 1996, 304–310.
 S.Y. Lim, J. Hu, and D.M. Dawson, An output feedbackcontroller for trajectory tracking of RLED robots using anobserved backstepping approach, Proc. 3rd IEEE Conf. Control Applications, Vol. 1, Glasgow, UK, 1994, 71–76.
 S.Y. Lim, J. Hu, and D.M. Dawson, Output feedback controller for trajectory tracking of RLED robots using an observed backstepping approach, International Journal of Robotics and Automation, 11(4), 1996, 149–160.
 S.Y. Lim, J. Hu, D.M. Dawson, and M. de Quieroz, A partial state feedback controller for trajectory tracking of rigid-link ﬂexible-joint robots using an observed backstepping approach, Journal of Robotic Systems, 12(12), 1995, 727–746.
 A. Loria, Global tracking control of one degree of freedom Euler–Lagrange systems without velocity measurements, European Journal of Control, 2, 1996, 144–151.
 A. Loria and H. Nijmeijer, Bounded output feedback tracking of fully actuated Euler–Lagrange systems, Systems and Control Letters, 33(3), 1998, 151–161.
 S. Malagari and B.J. Driessen, Adjustable-rate semi-globally exponential observer/controller for tracking in robots with actuator dynamics and only link position measurement, Control and Intelligent Systems, 38(1), 2010, 249–262.
 S. Malagari and B.J. Driessen, Globally exponential controller/observer for tracking in robots without velocity measurement, Asian Journal of Control, 14(2), 2012, 309–319.
 T.D. Nguyen and O. Egeland, Inﬁnite dimensional observer for a ﬂexible robot arm with a tip load, Asian Journal of Control, 10(4), 2008, 456–461.
 S. Nicosia and P. Tomei, Robot control by using only position measurements, IEEE Transactions on Automatic Control, 35(9), 1990, 1058–1061.
 S. Ozguli and H.D. Taghirad, A survey on the control of ﬂexible joint robots, Asian Journal of Control, 8(4), 2006, 332–344.
 P.R. Pagilla and M. Tomizuka, An adaptive output feedback controller for robot arms: Stability and experiment, Automatica, 37(7), 2001, 983–995.
 N. Sadegh, R. Horowitz, Stability and robustness analysis of a class of adaptive controllers for robotic manipulators, International Journal of Robotics Research, 9(3), 1990, 74–92.
 J. Slotine and W. Li, Applied nonlinear control (New Jersey: Prentice Hall, 1991).
 A. Teel and L. Praly, Global stabilizability and observability imply semi-global stabilizability by output feedback, Systems and Control Letters, 22(5), 1994, 313–325.
 E. Zergeroglu, W. Dixon, D. Haste, and D. Dawson, A composite adaptive output feedback tracking controller for robotic manipulators, Robotica, 17(6), 1999, 591–600.
 F. Zhang, D.M. Dawson, M.S. de Queiroz, and W.E. Dixon, Global adaptive output tracking control of robot manipulators, IEEE Transactions on Automatic Control, 45(6), 2000, 1203–1208.
 S. Malagari and B.J. Driessen, Globally asymptotic adaptive observer/controller for tracking in robots without velocity measurement, International Journal of Adaptive Control and Signal Processing, 26(5), 2012, 400–418.
 T. Burg, D. Dawson, J. Hu, and M. de Queiroz, An adaptive partial state-feedback controller for RLED robot manipulators, IEEE Transactions on Automatic Control, 41(7), 1996, 1024–1030.
 B.J. Driessen, Observer/controller with global practical stability for tracking in robots without velocity measurement, Asian Journal of Control, 17(5), 2015, 1898–1913.
 W.E. Dixon, E. Zergeroglu, and D.M. Dawson, Global ro-bust output feedback tracking control of robot manipulators, Robotica, 22(4), 2004, 351–357.
 S. Malagari and B.J. Driessen, Globally exponential controller/observer for tracking in robots with DC motor dynamics and only link position measurement, International Journal of Modelling, Identiﬁcation and Control, 19(1), 2013, 1–12.
 J.G. Romero, I. Sarras, and R. Ortega, A globally exponentially stable tracking controller for mechanical systems using position feedback, Proc. Amer. Control Conf., Washington, DC, United states, 2013, 4969–4974.
 J. Hu, D.M. Dawson, P. Vedagarbha, and H. Canbolat, Aglobal adaptive link position-tracking controller for robot manipulators driven by induction motors, International Journal of Systems Science, 28(7), 1997, 625–642.
 P.A. Ioannou and J. Sun, Robust adaptive control (New Jersey: Prentice Hall, 1996).
 M.M. Polycarpou and P.A. Ioannou, On the existence anduniqueness of solutions in adaptive control systems, IEEETransactions on Automatic Control, 38(3), 1993, 474–479.