SEM, ToF-SIMS and LFM morphological study of an heterogeneous polymeric surface Bernard Nysten, Geert Verfaillie, Etienne Ferain, Roger Legras, Jean-Benoit Lhoest, Claude Poleunis and Patrick Bertrand Microsc. Microanal. Microstruct., 5 4-6 (1994) 373-380 DOI: 10.1051/mmm:0199400504-6037300