Soft X-ray contact microscopy and transmission electron microscopy: Comparative study of biological samples T. Limongi, L. Palladino, E. Bernieri, G. Tomassetti, L. Reale, F. Flora, P. Cesare, C. Ercole, P. Aimola and A.M. Ragnelli J. Phys. IV France, 104 (2003) 345-348 DOI: 10.1051/jp4:200300096