1. Refraction contrast in X-ray introscopy;Somenkov;Sov. Phys. Tech. Phys.,1991
2. K. Iwata The technical development of X-ray the phase contrast imaging 112 117 2000
3. Phase contrast X-ray imaging;Momose;Synchrotron Radiat.,1997
4. Phase contrast imaging using polychromatic hard X-rays;Wilkins;Nature (London),1996
5. Phase Contrast Mammography Using a Practical Mo Tube;Ohara;Radiology,2000