TY - JOUR AU - Thomas, AU - Hayden, M AU - Nacher, P.J. AU - Petukhov, A AU - Saam, B AU - Walker, T C2 - Physical Review A DA - 2013-07-24 LA - en PB - Physical Review A PY - 2013 TI - Comment on "Enhanced polarization and mechanisms in optically pumped hyperpolarized 3He in the presence of 4He" ER -