Gao, Peng Yao, Baoli Min, Junwei Guo, Rongli Zheng, Juanjuan Ye, Tong Harder, Irina Nercissian, Vanusch Mantel, Klaus Media 1: Parallel two-step phase-shifting point-diffraction interferometry for microscopy based on a pair of cube beamsplitters Originally published in Optics Express on 31 January 2011 (oe-19-3-1930) 31 January 2011;media;Optics Express;microscopy;cube beamsplitters;oe;phase-shifting point-diffraction interferometry 2011-01-31
    https://opticapublishing.figshare.com/articles/media/Media_1_Parallel_two-step_phase-shifting_point-diffraction_interferometry_for_microscopy_based_on_a_pair_of_cube_beamsplitters/4943258
10.1364/OE.19.001930.m001