Elsevier, Journal of the Association of Arab Universities for Basic and Applied Sciences, 1(22), p. 76-82, 2017
DOI: 10.1016/j.jaubas.2016.01.004
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In this paper, a class of non-linear vector differential equations of third order with delay is considered. The stability, boundedness and ultimately boundedness of solutions are studied. The technique of proofs involves defining an appropriate Lyapunov functional. The obtained results include and improve the results in the literature.