Buljubasich, L., Prina, I., Franzoni, M. B., Münnemann, K., Spiess, H. W., & Acosta, R. H. (2013). High resolution para-hydrogen induced polarization in inhomogeneous magnetic fields. Journal of Magnetic Resonance, 230, 155-159. doi:10.1016/j.jmr.2013.02.008.