Larsson, A., Kuckling, D., & Schönhoff, M. (2001). 1H NMR of thermoreversible polymers in solution and at interfaces: the influence of charged groups on the phase transition. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 190(1-2), 185-192. doi:10.1016/S0927-7757(01)00678-1.