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• COMMENTS
• ERRATA

•	Dynamic symmetries in scattering Y. Alhassid, F. Iachello, and J. Wu pp. 271-273 [View   PDF (506 kB) ]

•	High-dimension chaotic attractors of a nonlinear ring cavity Martine Le Berre, Elisabeth Ressayre, Andrée Tallet, and Hyatt M. Gibbs pp. 274-277 [View   PDF (709 kB) ]

•	Measurement of the Lense-Thirring drag on high-altitude, laser-ranged artificial satellites Ignazio Ciufolini pp. 278-281 [View   PDF (943 kB) ]

•	Test of the special-relativistic Doppler formula at β=0.84 D. W. MacArthur, K. B. Butterfield, D. A. Clark, J. B. Donahue, P. A. Gram, H. C. Bryant, C. J. Harvey, W. W. Smith, and G. Comtet pp. 282-285 [View   PDF (660 kB) ]

•	Theory of a two-level system strongly interacting with a degenerate Fermi gas K. Vladár, G. T. Zimányi, and A. Zawadowski pp. 286-289 [View   PDF (744 kB) ]

•	Study of a quantum fermi-acceleration model Jorge V. José and Robert Cordery pp. 290-293 [View   PDF (867 kB) ]

•	Geometrical constraints and equations of motion in extended supergravity Ling-Lie Chau and Chong-Sa Lim pp. 294-297 [View   PDF (819 kB) ]

•	Weak mixing angles from semileptonic decays in the quark model Benjamin Grinstein, Mark B. Wise, and Nathan Isgur pp. 298-301 [View   PDF (686 kB) ]

•	Production mechanisms for a new neutral particle below 2 MeV Alan Chodos and L. C. Wijewardhana pp. 302-305 [View   PDF (782 kB) ]

•	Complex Langevin solution of the Schwinger model H. Gausterer and J. R. Klauder pp. 306-308 [View   PDF (514 kB) ]

•	Correlation properties of unresolved gamma rays from high-spin states J. E. Draper, E. L. Dines, M. A. Deleplanque, R. M. Diamond, and F. S. Stephens pp. 309-312 [View   PDF (754 kB)  See Also: Erratum]

•	Bimodal symmetric fission observed in the heaviest elements E. K. Hulet, J. F. Wild, R. J. Dougan, R. W. Lougheed, J. H. Landrum, A. D. Dougan, M. Schadel, R. L. Hahn, P. A. Baisden, C. M. Henderson, R. J. Dupzyk, K. Sümmerer, and G. R. Bethune pp. 313-316 [View   PDF (839 kB) ]

•	Asymptotic normalization constants for 3→n+d and triton binding energy S. Ishikawa and T. Sasakawa pp. 317-319 [View   PDF (505 kB) ]

•	‘‘Heisenberg core’’ in classical-trajectory Monte Carlo calculations of ionization and charge exchange D. Zajfman and D. Maor pp. 320-323 [View   PDF (733 kB) ]

•	van der Waals force between positronium and hydrogenic atoms: Finite-mass corrections C. K. Au and Richard J. Drachman pp. 324-327 [View   PDF (641 kB) ]

•	Rydberg spectroscopy of H2 via stepwise resonant two-photon ion-pair (H++H-) production A. H. Kung, Ralph H. Page, R. J. Larkin, Y. R. Shen, and Yuan T. Lee pp. 328-331 [View   PDF (776 kB) ]

•	Measurement of Stark amplitudes α,β in the 62P1/2→72P1/2 transition in atomic thallium Carol E. Tanner and Eugene D. Commins pp. 332-335 [View   PDF (668 kB) ]

•	Radial viscous fingers and diffusion-limited aggregation: Fractal dimension and growth sites Gérard Daccord, Johann Nittmann, and H. Eugene Stanley pp. 336-339 [View   PDF (828 kB) ]

•	Nonthermal electron velocity distribution measured by electron cyclotron emission in Alcator C tokamak K. Kato and I. H. Hutchinson pp. 340-343 [View   PDF (776 kB) ]

•	Virtual-cathode oscillator emission by a pinched diode J. Benford, H. Sze, W. Woo, and B. Harteneck pp. 344-346 [View   PDF (574 kB) ]

•	Direct observation of critical phenomena by incoherent neutron scattering B. Toudic, H. Cailleau, R. E. Lechner, and W. Petry pp. 347-350 [View   PDF (784 kB) ]

•	Path-integral computation of the low-temperature properties of liquid 4He D. M. Ceperley and E. L. Pollock pp. 351-354 [View   PDF (630 kB) ]

•	Preservation of a 7×7 periodicity at a buried amorphous Si/Si(111) interface J. M. Gibson, H.-J. Gossmann, J. C. Bean, R. T. Tung, and L. C. Feldman pp. 355-358 [View   PDF (1046 kB) ]

•	Identification of vortices in superfluid 3B E. V. Thuneberg pp. 359-362 [View   PDF (710 kB) ]

•	Vortices with spontaneously broken axisymmetry in 3B M. M. Salomaa and G. E. Volovik pp. 363-366 [View   PDF (857 kB) ]

•	Metastable angular distributions from electron-stimulated desorption Mark D. Alvey, Miles J. Dresser, and John T. Yates pp. 367-370 [View   PDF (866 kB) ]

•	Experimental evidence for the Haldane gap in a spin-1 nearly isotropic, antiferromagnetic chain W. J. Buyers, R. M. Morra, R. L. Armstrong, M. J. Hogan, P. Gerlach, and and K. Hirakawa pp. 371-374 [View   PDF (672 kB) ]

•	Observation of a true interface state in strained-layer Cu adsorption on Ru(0001) J. E. Houston, C. H. Peden, Peter J. Feibelman, and D. R. Hamann pp. 375-377 [View   PDF (654 kB) ]

•	Global phase coherence in two-dimensional granular superconductors B. G. Orr, H. M. Jaeger, A. M. Goldman, and C. G. Kuper pp. 378-381 [View   PDF (904 kB)  See Also: Erratum]

•	Heat capacity of a condensed electron system in the dilute metal n-Hg0.8Cd0.2Te J. P. Stadler and G. Nimtz pp. 382-385 [View   PDF (682 kB) ]

•	Direct observation of ensemble averaging of the Aharonov-Bohm effect in normal-metal loops C. P. Umbach, C. Van Haesendonck, R. B. Laibowitz, S. Washburn, and R. A. Webb pp. 386-389 [View   PDF (887 kB) ]

•	Pressure dependence of the low-temperature specific heat of the heavy-fermion compound CeAl3 G. E. Brodale, R. A. Fisher, Norman E. Phillips, and J. Floquet pp. 390-393 [View   PDF (808 kB) ]

•	Low-frequency modes in proteins: Use of the effective-medium approximation to interpret the fractal dimension observed in electron-spin relaxation measurements R. Elber and M. Karplus pp. 394-397 [View   PDF (790 kB) ]

•	Comment on ‘‘Evidence for a nucleon-nucleus spin-spin interaction in 9’ S. Raman and J. E. Lynn pp. 398 [View   PDF (254 kB) ]

•	Mughabghab responds S. F. Mughabghab pp. 399 [View   PDF (274 kB) ]

•	Comment on ‘‘Quantization of asymmetric shapes in nuclei’’ O. Castaos, A. Frank, P. O. Hess, and H. Ogura pp. 400 [View   PDF (200 kB) ]

•	Comment on ‘‘Photoelectron angular distributions for near-threshold two-photon ionization of cesium and rubidium atoms’’ P. Lambropoulos and X. Tang pp. 401 [View   PDF (207 kB) ]

•	Hydrogen-acceptor pairs in silicon Gary G. DeLeo and W. Beall Fowler pp. 402 [View   PDF (238 kB) ]

•	Assali and Leite respond L. V. Assali and J. R. Leite pp. 403 [View   PDF (232 kB) ]

•	Erratum: Effective-action expansion in perturbation theory [Phys. Rev. Lett. 54, 1222 (1985)] Lai-Him Chan pp. 404 [View   PDF (93 kB) ]

•	Lifetime Enhancement of Two-Dimensional Excitons by the Quantum-Confined Stark Effect H. -J. Polland, L. Schultheis, J. Kuhl, E. O. Göbel, and C. W. Tu pp. 404 [View   PDF (93 kB) ]