[N1] L.H. Hố, L.T.P. Ngọc (2004), Một ghi chú về tính compact, liên thơng của tập hợp nghiệm của bài tốn tiến hố, Tạp chí khoa học Khoa học Tự nhiên Trường ĐHSP Tp. HCM, Số 4(38), 3-13.
[N2] L.H. Hố, L.T.P. Ngọc (2006), Boundary and initial value problems for second order neutral functional differential equations, Electronic J. Diff. Equat., No.62, 1-19.
[N3] L.H. Hố, L.T.P. Ngọc (2006), The connectivity and compactness of so- lution set of an integral equation and weak solution set of an initial-boundary value problem, Demonstratio Math. Vol.39, No.2 , 357- 376.
[N4] L.T.P. Ngọc, N.T. Long (2006), On a fixed point theorem of Kras- nosel’skii type and applications to integral equations, Fixed Point Theory and Applications, Hindawi Publishing Corporation, Article ID 30847, 1-24.
[N5] N.T. Long, L.T.P. Ngọc (2006), Bài tốn hỗn hợp cho phương trình sĩng phi tuyến chứa tốn tử Kirchhoff, Tạp chí khoa học Khoa học Tự nhiên Trường ĐHSP Tp. HCM, Số 8(42), 44-61.
[N6] N.T. Long, L.T.P. Ngọc (2007), On a nonlinear Kirchhoff-Carrier wave equation in the unit membrane: The quadratic convergence and asymptotic expansion of solutions, Demonstratio Math. Vol.40, No.2 , 365- 392.
[N7] N.T. Long, L.T.P. Ngọc, On a nonlinear Kirchhoff-Carrier wave equa- tion in the unit membrane I, (Bài gửi cơng bố).
[N8] L.T.P. Ngọc, N.T. Long,The Hukuhara-Kneser Property for a nonlinear integral equation, (Bài gửi cơng bố).
[N9] N.T. Long, L.T.P. Ngọc (2007), A wave equation associated with mixed nonhomogeneous conditions: The compactness and connectivity of weak so- lution set, Abstract and Applied Analysis, Hindawi Publishing Corporation, Article ID 20295, 1-17.
[N10] L.T.P. Ngọc (2007),Applying fixed point theory to the initial value prob- lem for the functional differential equation with finite delay, Vietnam Journal of Mathematics, 35:1, 43-60.
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