1. Vũ Ngọc Phát, Piyapong Niamsup, Stability analysis for a class of functional differential equations and applications, Nonlinear Anal.: Theory, Methods \& Applications, 71 (2009), 6265 -- 6275
2. Nguyễn Văn Ngọc, Dual integral equations involving fourier transforms with increasing symbols, Acta Math. Vietnamica, 34 (2009), 305 -- 318
3. Trần Vĩnh Linh, Vu Ha Van, Philip Matchett Wood, On a conjecture of Alon, Journal of Number Theory, 129 (2009), 2801 -- 2807