U. Fano and C. M. Lee

Phys. Rev. Lett. 31, 1573 (1973) - Published 31 December, 1973

P. Bakshi, G. Kalman, and Arthur Cohn

Phys. Rev. Lett. 31, 1576 (1973) - Published 31 December, 1973

J. T. Folinsbee and A. C. Anderson

Phys. Rev. Lett. 31, 1580 (1973) - Published 31 December, 1973

James R. Chelikowsky and Marvin L. Cohen

Phys. Rev. Lett. 31, 1582 (1973) - Published 31 December, 1973

H. -G. Purwins, J. G. Houmann, P. Bak, and E. Walker

Phys. Rev. Lett. 31, 1585 (1973) - Published 31 December, 1973

R. A. Weiner

Phys. Rev. Lett. 31, 1588 (1973) - Published 31 December, 1973

V. Rojansky

Phys. Rev. Lett. 31, 1591 (1973) - Published 31 December, 1973