Arnold, V.I., On matrices depending on parameters. UspekhiMat. Nauk.26, 1971.  Arnold, V.I., On matrices depending on parameters. UspekhiMat. Nauk.26, 1971.
 C.T. Chen, “Introduction to Linear System Theory”. Holt, Rinehart and Winston Inc, New York, (1970).
 L. Dai “Singular Control Systems”. Springer Verlag. New York (1989).
 A. Fax, R. Murray, Information flow and cooperative control of vehicle formations, IEEE Trans. Automat. Control. 49, (9), pp. 1453-1464, (2004).
 M.I. Garc´ıa-Planas, Sensivity and stability of singular systems under proportional and derivative feedback, Wseas Transactions on Mathematics, 8, (11), pp 635-644, (2009).
 M.I. Garc´ıa-Planas, Obtaining Consensus of Multi-agent Linear Dynamic Systems, Advances in Applied and Pure Mathematics, pp. 91-95, (2014)
 M.I. Garc´ıa-Planas, M.D. Magret, Miniversal deformations of linear systems under the full group action. Systems and control letters, 35, pp. 279–286, (1998).
 M.I. Garc´ıa-Planas, S. Tarragona, A. Diaz, Controllability of time-invariant singular linear systems. From physics to control through an emergent view. pp. 112 -117. World Scientific, 2010.
 A. Jadbabaie, J. Lin, A.S. Morse, Coordination of groups of mobile autonomous agents using nearest neighbor rules, IEEE Transaction on Automatic Control. 48 (6), pp. 943-948, (2007).
 P. Lancaster, M. Tismenetsky, “The Thoery of Matrices”. Academic Press. San Diego (1985).
 C.T. Lin, Structural Controllability. IEEE Trans. Automatic Control. AC-19, pp. 201–208, (1974).
 R.O. Saber, R.M. Murray, Consensus Protocols for Networks of Dynamic Agents, Report.
 R.O. Saber, R.M. Murray, Consensus problems in networks of agents with switching topology and time-delays, IEEE Trans. Automat. Control. 49, (9), pp. 1520-1533, (2004).
 J. Wang, D. Cheng, X. Hu, Consensus of multiagent linear dynamics systems, Asian Journal of Control 10, (2), pp. 144-155, (2008).
 D. West “Introduction to Graph Theory” Prentice Hall (3rd Edition), (2007).
 G. Xie, L. Wang, Consensus control for a class of networks of dynamic agents: switching topology, Proc. 2006 Amer. Contro. Conf., pp. 1382- 1387, (2007).