Linh Vu Hoang: Error estimates for the amplitude-phase method in the evaluation of radial wave functions. In: Acta scientiarum mathematicarum, (63) 3-4. pp. 657-670. (1997)
Linh Vu Hoang; Nga Ngo Thi Thanh; Tuan Nguyen Ngoc: Asymptotic behavior of solutions of quasilinear differential-algebraic equations. (2022)