S. Alexander, J. Bernasconi, W. R. Schneider, and R. Orbach
Rev. Mod. Phys. 53, 175 (1981) - Published 1 April, 1981
Milton W. Cole, D. R. Frankl, and David L. Goodstein
Rev. Mod. Phys. 53, 199 (1981) - Published 1 April, 1981
Jihn E. Kim, Paul Langacker, M. Levine, and H. H. Williams
Rev. Mod. Phys. 53, 211 (1981) - Published 1 April, 1981
H. B. Thacker
Rev. Mod. Phys. 53, 253 (1981) - Published 1 April, 1981
John B. Delos
Rev. Mod. Phys. 53, 287 (1981) - Published 1 April, 1981
