1. Theory of Oscillators;Andronov,1966
2. On stability of equilibrium states of relay systems;Anosov;Avtom. Telemeh.,1959
3. Sur une classe de polynômes;Appell;Ann. Sci. Éc. Norm. Super.,1880
4. Time switched differential equations and the Euler polynomials;Bertolim;Ann. Mat. Pura Appl.,2013
5. On the Euler and Bernoulli polynomials;Brillhart;J. Reine Angew. Math.,1969