Structural analysis of membranes from photosynthetic bacteria by SANS P. Mariani, R. Casadio, F. Carsughi, M. Ceretti and F. Rustichelli Europhys. Lett., 37 6 (1997) 433-438 Published online: 01 September 2002 DOI: 10.1209/epl/i1997-00168-7