Weijuan Qu, Ya'nan Zhi, De'an Liu, Wei Lu, Zhijuan Hu, Chunhua Wang, Liren Liu, "Comparison of the contrast-phase map reconstruction by Fresnel transform method and the angular spectrum backward propagation algorithm in RuO₂:LiNbO₃ crystal," Proc. SPIE 6292, Interferometry XIII: Techniques and Analysis, 62921D (14 August 2006);