Cerino, J.A.; Rabedeau, T. & Bowen, W. A photon beam position monitor for SSRL beamline 9, article, October 1, 1995; (https://digital.library.unt.edu/ark:/67531/metadc671421/m1/1/: accessed May 25, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .