[1]N. V. Lâm, L. C. Quỳnh, and N. V. Sơn, “Aperiodical corelation function and complexity (Equivalen linear sapan) of the nonlinear PN-sequences for 3. generator CDMA”., <i>J. Comput. Sci. Cybern.</i>, vol. 22, no. 1, pp. 75–80, Jul. 2012.