2H-NMR Detection of the Pressure Effect on Packing Modulations in a Columnar Liquid Crystal A. Hollander, J. Hommels, K.O. Prins, H.W. Spiess and M. Werth J. Phys. II France, 6 12 (1996) 1727-1741 DOI: 10.1051/jp2:1996158