X. L. Zhang

RX J1856.5-3754: A Strange Star with Solid Quark Surface?

R. Xu, X. L. Zhang, S. Zhang, 2003, astro-ph/0310049.

Relativistic Effects on the Observed AGN Luminosity Distribution and Spectral Shape of Seyfert Galaxies

X. L. Zhang, S. Zhang, Yueying Liu, 2007 .