TY - GEN AU - N. Nucker, U. Eckern, J. Fink, P. Muller T1 - LONG-WAVELENGTH COLLECTIVE EXCITATIONS OF CHARGE-CARRIERS IN HIGH-TC SUPERCONDUCTORS CY - PY - 1991 PB - T3 - Physical Review B VL - 44 UR - http://dx.doi.org/10.1103/PhysRevB.44.7155 SN - 0163-1829