An equation alternately of retarded and advanced type, Proceedings of the American Mathematical Society, vol.99, issue.4, pp.726-732, 1987. ,
DOI : 10.1090/S0002-9939-1987-0877047-8
Retarded differential equations with piecewise constant delays, Journal of Mathematical Analysis and Applications, vol.99, issue.1, pp.265-297, 1984. ,
DOI : 10.1016/0022-247X(84)90248-8
URL : https://doi.org/10.1016/0022-247x(84)90248-8
Differential equations alternately of retarded and advanced type, Journal of Mathematical Analysis and Applications, vol.129, issue.1, pp.243-255, 1988. ,
DOI : 10.1016/0022-247X(88)90246-6
URL : https://doi.org/10.1016/0022-247x(88)90246-6
Oscillations in systems of differential equations with piecewise constant argument, Journal of Mathematical Analysis and Applications, vol.137, issue.1, pp.221-239, 1989. ,
DOI : 10.1016/0022-247X(89)90286-2
On piecewise constant delay differential equations, Journal of Mathematical Analysis and Applications, vol.169, issue.1, pp.55-69, 1992. ,
DOI : 10.1016/0022-247X(92)90103-K
URL : https://doi.org/10.1016/0022-247x(92)90103-k
Oscillation of delay differential equations with piecewise constant argument, Applied Mathematics-A Journal of Chinese Universities, vol.29, issue.4, pp.1005-1031, 2000. ,
DOI : 10.1007/s11766-000-0034-3
Partial differential equations with piecewise constant delay, International Journal of Mathematics and Mathematical Sciences, vol.14, issue.3, pp.485-496, 1991. ,
DOI : 10.1155/S0161171291000674
URL : https://doi.org/10.1155/s0161171291000674
An analytical and numerical method for solving linear and nonlinear vibration problems, International Journal of Solids and Structures, vol.34, issue.21, pp.2709-2731, 1997. ,
DOI : 10.1016/S0020-7683(96)00169-2
Erzwungene Schwingungen beiver a nderlicher Eigenfrequenz, Braunsweig, 1918. ,
Regular and Chaotic Solutions of Duffing's Equation for Large Forcing, IMA Journal of Applied Mathematics, vol.37, issue.2, pp.113-145, 1986. ,
DOI : 10.1093/imamat/37.2.113
Numerical simulations of periodic and chaotic responses in a stable duffing system, International Journal of Non-Linear Mechanics, vol.22, issue.5, pp.401-425, 1987. ,
DOI : 10.1016/0020-7462(87)90033-3
A generalized form of an approximate solution to a strongly non-linear, second-order, differential equation, International Journal of Control, vol.19, issue.4, pp.831-839, 1974. ,
DOI : 10.1080/00207177308932406
A quantitative stability and bifurcation analyses of the generalized duffing oscillator with strong nonlinearity, Journal of the Franklin Institute, vol.334, issue.3, pp.447-459, 1997. ,
DOI : 10.1016/S0016-0032(96)00089-0