1. Ruland W (1967) J Appl Phys 38:3585
2. Ruland W (1969) Appl Polymer Symposia 9:293
3. Fourdeux A, Perret R, Ruland W (1971) International Conference on Carbon Fires, their Composites and Applications, London, Prepr No 9
4. Perret R, Ruland W (1973) Kolloid Z u Z Polym 251:34
5. Fischer L, Ruland W (1979) Coll & Polym Sci 257:449