S.  Kariyo, Kuppers, M., Badiger, M. V., Prabhakar, A., Jagadeesh, B., Stapf, S., and Blumich, B., ?Morphology and chain dynamics during collapse transition of PNIPAM gels studied by combined imaging, relaxometry and Xe-129 spectroscopy techniques?, Magnetic Resonance Imaging, vol. 23, no. 2, pp. 249-253, 2005.