%0 conference poster %@ %A Sobierajski, R., Krzywinski, J., Andrejczuk, A., Faatz, B., Felten, F., Jakobi, S., Juha, L., Jurek, M., Kauch, A., Klinger, D., Pelka, J.B., Saldin, E., Schneidmiller, E., Sikora, M., Steeg, B., Yurkov, M. %D 2002 %J FEL 2002, 24th International Free Electron Laser Conference and 9th FEL Users Workshop %T Structural changes at solid surfaces irradiated with femtosecond, intense XUV pulses generated by TTF-FEL %U %X