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References
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.. [Caron20] `Biped Stabilization by Linear Feedback of the Variable-Height
   Inverted Pendulum Model
   <https://hal.archives-ouvertes.fr/hal-02289919/document>`_, S. Caron, IEEE
   International Conference on Robotics and Automation, May 2020.

.. [Caron19] `Capturability-based Pattern Generation for Walking with Variable
   Height <https://hal.archives-ouvertes.fr/hal-01689331/document>`_, S. Caron,
   A. Escande, L. Lanari and B. Mallein, IEEE Transactions on Robotics, July
   2019.

.. [Audren18] `3D robust stability polyhedron in multi-contact
   <https://hal-lirmm.ccsd.cnrs.fr/lirmm-01477362/document>`_, H. Audren and A.
   Kheddar, IEEE Transactions on Robotics, vol., 34, no. 2, February 2018.

.. [Caron17w] `Dynamic Walking over Rough Terrains by Nonlinear Predictive
   Control of the Floating-base Inverted Pendulum
   <https://hal.archives-ouvertes.fr/hal-01481052/document>`_, S. Caron and A.
   Kheddar, IEEE/RSJ International Conference on Intelligent Robots and
   Systems, September 2017.

.. [Caron17z] `ZMP support areas for multi-contact mobility under frictional
   constraints <https://hal.archives-ouvertes.fr/hal-02108589/document>`_, S.
   Caron, Q.-C. Pham and Y. Nakamura, IEEE Transactions on Robotics, vol. 33,
   no. 1, February 2017.

.. [Scianca16] `Intrinsically stable MPC for humanoid gait generation
   <http://www.dis.uniroma1.it/%7Elabrob/pub/papers/Humanoids16_MPC.pdf>`_, 
   N. Scianca, M. Cognetti, D. De Simone, L. Lanari and G. Oriolo, IEEE-RAS
   International Conference on Humanoid Robots, November 2016.

.. [Caron16] `Multi-contact Walking Pattern Generation based on Model Preview
   Control of 3D COM Accelerations
   <https://hal.archives-ouvertes.fr/hal-01349880/document>`_, S. Caron and A.
   Kheddar, IEEE-RAS International Conference on Humanoid Robots, November
   2016.

.. [Nozawa16] `Three-dimensional humanoid motion planning using COM feasible
   region and its application to ladder climbing tasks
   <https://doi.org/10.1109/HUMANOIDS.2016.7803253>`_, Nozawa, Shunichi, et
   al., IEEE-RAS International Conference on Humanoid Robots, November 2016.

.. [Caron15] `Stability of surface contacts for humanoid robots: Closed-form
   formulae of the contact wrench cone for rectangular support areas
   <https://hal.archives-ouvertes.fr/hal-02108449/document>`_, S. Caron,
   Q.-C. Pham and Y. Nakamura, IEEE International Conference on Robotics and
   Automation, May 2015.

.. [Englsberger15] `Three-Dimensional Bipedal Walking Control Based on
   Divergent Component of Motion <https://doi.org/10.1109/TRO.2015.2405592>`_,
   J. Englsberger, C. Ott and A. Albu-Schäffer, IEEE Transactions on Robotics,
   vol. 31, no. 2, March 2015.

.. [Flacco15] `Control of Redundant Robots Under Hard Joint Constraints:
   Saturation in the Null Space <https://doi.org/10.1109/TRO.2015.2418582>`_,
   F. Flacco, A. De Luca and O. Khatib, IEEE Transactions on Robotics, vol. 31,
   no. 3, June 2015.

.. [Audren14] `Model preview control in multi-contact motion-application to a
   humanoid robot <https://hal-lirmm.ccsd.cnrs.fr/lirmm-01256511/document>`_,
   H. Audren et al., IEEE/RSJ International Conference on Intelligent Robots
   and Systems, September 2014.

.. [ElKhoury13] `Planning Optimal Motions for Anthropomorphic Systems
   <http://thesesups.ups-tlse.fr/2033/1/2013TOU30065.pdf>`_, A. El Khoury, June
   2013.

.. [Kanoun12] `Real-time prioritized kinematic control under inequality
   constraints for redundant manipulators
   <http://www.roboticsproceedings.org/rss07/p21.pdf>`_, O. Kanoun, Robotics:
   Science and Systems, June 2011.

.. [Sugihara11] `Solvability-Unconcerned Inverse Kinematics by the
   Levenberg-Marquardt Method <https://doi.org/10.1109/TRO.2011.2148230>`_, T.
   Sugihara, IEEE Transactions on Robotics, vol. 27, no. 5, October 2011.

.. [Bretl08] `Testing Static Equilibrium for Legged Robots
   <https://doi.org/10.1109/TRO.2008.2001360>`_, T. Bretl and S. Lall, IEEE
   Transactions on Robotics, vol. 24, no. 4, August 2008.

.. [Wieber06] `Trajectory free linear model predictive control for stable
   walking in the presence of strong perturbations
   <https://hal.inria.fr/inria-00390462/document>`_, P.-B. Wieber, IEEE-RAS
   International Conference on Humanoid Robots, 2006.

.. [Diebel06] `Representing Attitude: Euler Angles, Unit Quaternions, and
   Rotation Vectors
   <http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.110.5134>`_, J.
   Diebel, 2006.

.. [Sardain04] `Forces acting on a biped robot. Center of pressure-Zero moment
   point <https://doi.org/10.1109/TSMCA.2004.832811>`_, P. Sardain and G.
   Bessonnet, IEEE Transactions on Systems, Man and Cybernetics, vol. 34, no.
   5, September 2004.

.. [Kajita01] `The 3D Linear Inverted Pendulum Mode: A simple modeling for a
    biped walking pattern generation
    <http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=973365>`_, S.
    Kajita, F. Kanehiro, K. Kaneko, K. Yokoi and H. Hirukawa, IEEE/RSJ
    International Conference on Intelligent Robots and Systems, 2001.

.. [Walker82] `Efficient dynamic computer simulation of robotic mechanisms
   <https://doi.org/10.1115/1.3139699>`_, M. Walker and D. Orin, ASME Trans. J.
   Dynamics Systems, Measurement and Control, vol. 104, 1982.