Luttinger liquids with boundaries: Power-laws and energy scales V. Meden, W. Metzner, U. Schollwöck, O. Schneider, T. Stauber and K. Schönhammer Eur. Phys. J. B, 16 4 (2000) 631-646 Published online: 15 August 2000 DOI: 10.1007/s100510070180