Option pricing in a regime-switching model using the fast Fourier transform. Liu, R.H.; Zhang, Q.; Yin, G. — 2006 Journal of Applied Mathematics and Stochastic Analysis
Optimal homotopy methods for solving nonlinear systems. Part 1. Nonsingular homotopy paths. L.-Q. Zhang; G.-Q. Han — 1993 Numerische Mathematik
On the fundamental groups of some open rational surfaces. R.V. Gurjar; D.-Q. Zhang — 1996 Mathematische Annalen