Barskiy, D. A., Coffey, A. M., Nikolaou, P., Mikhaylov, D. M., Goodson, B. M., Branca, R. T., …Chekmenev, E. Y. (2017). NMR hyperpolarization techniques of gases. Chemistry - a European Journal, 23(4), 725-751. https://doi.org/10.1002/chem.201603884