Karunanithy, G; Reinstein, J; Hansen, DF; (2020) Multi-Quantum Chemical Exchange Saturation Transfer NMR to Quantify Symmetrical Exchange: Application to Rotational Dynamics of the Guanidinium Group in Arginine Side Chains. The Journal of Physical Chemistry Letters 10.1021/acs.jpclett.0c01322. (In press). Green open access