1. Luo ACJ (2009) Discontinuous dynamical systems on time-varying domains. HEP-Springer, Heidelberg
2. Huygens (Hugenii) C (1673) Horologium Oscillatorium. Apud F. Muguet, Parisiis, France, 1673 (English Translation (1986) The pendulum clock. Iowa State University, Ames)
3. Pikovsky A, Rosenblum M, Kurths J (2001) Synchronization: a universal concept in nonlinear science. Cambridge University Press, Cambridge
4. Boccaletti S (2008) The synchronized dynamics of complex systems. Elsevier, Amsterdam
5. Rayleigh J (1945) The theory of sound. Dover, New York