ERRATA Erratum: Interaction of coupled plasmon-phonon modes with a point charge in a polar semiconductor †Phys. Rev. B 49, 10 298 „1994…‡ S. Rudin and T. L. Reinecke In Eq. 14 the factor 2  / 0 -1 should be replaced by   / 0 . The equation should read Z ' =Z    /  0  . 14 0163-1829/96/5315/104061/$10.00 © 1996 The American Physical Society Erratum: Magnetoplasma excitations in quantum-well wires †Phys. Rev. B 49, 13 607 „1994…‡ L. Wendler and V. G. Grigoryan A misprint has been found on page 13 607 concerning the reference of the representation of the shifted harmonic-oscillator wave function. The correct sentence should have the following form. Hence, to obtain the exact RPA dispersion relation in the subband space, we use the following representation of the shifted harmonic-oscillator wave function: 8  N ( y -Y k x ) =  L =0  C LN ( Y k x )  L ( y ), where {  N ( y )} is a closure set of undisplaced wave functions. 8 L. Wendler, T. Kraft, and V. G. Grigoryan unpublished. 0163-1829/96/5315/104061/$10.00 © 1996 The American Physical Society Erratum: Coulomb interaction and persistent currents in ensembles of mesoscopic metal rings †Phys. Rev. B 50, 7668 „1994…‡ G. Vignale The acknowledgement section of this paper should have included the following sentence: We gratefully acknowledge partial support from the University of Missouri Research Board under Grant No. RB 93-033. 53 0163-1829/96/5315/104061/$10.00 10 406 © 1996 The American Physical Society PHYSICAL REVIEW B 15 APRIL 1996-I VOLUME 53, NUMBER 15