Reay, Reibel, Romanowski, Stanton, U., Abolins, Lin, SMith, U., Edwards, Coll., Fitch, Rush, U., 1970. A study of neutron proton charge exchange scattering in the momentum range 50 - 200 GeV. Office of Scientific and Technical Information (OSTI).. https://doi.org/10.2172/897142