Smectic order parameters via liquid crystal NMR spectroscopy: Application to a partial bilayer smectic A phaseMaria Enrica Di Pietro, Giorgio Celebre, Giuseppina De Luca, Herbert Zimmermann and Giorgio CinacchiEur. Phys. J. E, 35 10 (2012) 112DOI: https://doi.org/10.1140/epje/i2012-12112-0