1. Nguyen, T.V., T.P. Ho-Le and U.V. Le, 2017. International collaboration in scientific research in Vietnam: An analysis of patterns and impact. Scientometrics, 110: 1035-1051.
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2. Pascali, E. and U.V. Le, 2016. On the zeros of the solutions of some class of differential equations. Anal. Geometry Number Theory, Vol. 1. .
3. Le, U.V. and E. Pascali, 2013. A model for the problem of the cooperation/competition between infinite continuous species. Ricerche Matematica, 62: 139-153.
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4. Le, U.V., 2012. On a low-frequency asymptotic expansion of weak solutions of a semilinear wave equation with a boundary-like anti-periodic condition. Manuscripta Math., 138: 439-461.
5. Le, U.V., 2011. A semilinear wave equation with space-time dependent coefficients and a memory boundarylike antiperiodic condition: A low-frequency asymptotic expansion. J. Math. Phys., Vol. 52. 10.1063/1.3548839.
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6. Le, U.V., 2011. A general mathematical model for the collision between a free-fall hammer of a pile-driver and an elastic pile: Continuous dependence and low-frequency asymptotic expansion. Nonlinear Anal.: Real World Applic., 12: 702-722.
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7. Le, U.V., 2010. Regularity of the solution of a nonlinear wave equation. Commun. Pure Applied Anal., 9: 1099-1115.
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8. Le, U.V., 2010. Contraction-Galerkin method for a semi-linear wave equation. Commun. Pure Applied Anal., 9: 141-160.
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9. Le, U.V., 2010. A semi-linear wave equation with space-time dependent coefficients and a memory boundary-like antiperiodic condition: Regularity and stability. J. Math. Phys., Vol. 51. .
10. Le, U.V., 2010. A general mathematical model for the collision between a free-fall hammer of a pile-driver and an elastic pile. Nonlinear Anal.: Real World Applic., 11: 2930-2956.
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11. Le, U.V. and E. Pascali, 2010. A contraction procedure for the unique solvability of a semilinear wave equation associated with a full nonlinear damping-source term and a linear integral equation at the boundary. Mem. Different. Eq. Math. Phys., 49: 139-150.
12. Harjulehto, P., P. Hasto, U.V. Le and M. Nuortio, 2010. Overview of differential equations with non-standard growth. Nonlinear Anal.: Theory Meth. Applic., 72: 4551-4574.
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13. Le, U.V., L.T.T. Nguyen, E. Pascali and A.H. Sanatpour, 2009. Extended solutions of a system of nonlinear integro-differential equations. Le Matematiche, 64: 3-16.
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14. Le, U.V., 2009. Global unique solvability and decays for a wave equation associated with an integral equation. Proc. A. Razmadze Math. Inst., 149: 35-53.
15. Le, U.V. and E. Pascali, 2009. Existence theorems for systems of nonlinear integro-differential equations. Ricerche Matemat., 58: 91-101.
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16. Pascali, E. and L. Van Ut, 2008. An existence theorem for self-referred and hereditary differential equations. Adv. Different. Equat. Control Process., 1: 25-32.
17. Le, U.V., 2008. The well-posedness of a semilinear wave equation associated with a linear integral equation at the boundary. Mem. Different. Eq. Math. Phys., 44: 69-88.
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18. Le, U.V., 2008. On a semi-linear wave equation associated with memory conditions at the boundaries: Unique existence and regularity. Dyn. Partial Differ. Eq., 5: 313-327.
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19. Le, U.V., 2008. On a semi-linear wave equation associated with memory conditions at the boundaries: Stability and asymptotic expansion. Dyn. Partial Differ. Eq., 5: 329-347.
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20. Le, U.V., 2008. A contraction procedure for the unique solvability of a semilinear wave equation associated with a linear integral equation at the boundary. JP J. Fixed Point Theory Applic., 3: 49-61.
21. Le, U.V. and L.T.T. Nguyen, 2008. An existence theorem for a system of self-referred and hereditary differential equations. Elect. J. Different. Eq., Vol. 51. .
22. Long, N.T., L. Van Ut and N.T.T. Truc, 2005. On a shock problem involving a linear viscoelastic bar. Nonlinear Anal.: Theory Meth. Applic., 63: 198-224.
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