1. U.S. Department of Energy Office of Science Nuclear Science Advisory Committee’s December 2007 Long Range Plan The Frontiers of Nuclear Science available at: http://science.energy.gov/np/nsac .
2. Report on the Joint BNL/INT/JLab Program Gluons and the quark sea at high energies: Distributions, polarization, tomography, Institute for Nuclear Theory, Seattle, WA, September 13 -- November 19, 2010, edited by D. Boer, M. Diehl, R. Milner, R. Venugopalan, W. Vogelsang, arXiv:1108.1713 [nucl-th], see also presentations and materials at: http://www.int.washington.edu/PROGRAMS/10-3 .
3. L.W. Whitlow, E.M. Riordan, S. Dasu, S. Rock, A. Bodek, Phys. Lett. B 282, 475 (1992) and references therein.
4. D. Higinbotham, W. Melnitchouk, A.W. Thomas, J. Phys.: Conf. Ser. 299, 011001 (2011).
5. Conceptual Design Report (CDR) for the Science and Experimental Equipment for the 12 GeV Upgrade of CEBAF (Prepared for the DOE Science Review, April 6--8, 2005), edited by J. Arrington (Jefferson Lab, 2005) available at: http://www.jlab.org/div_dept/physics_division/GeV/doe_review/CDR_for_Science_Review.pdf .