Yu.M. Gerbstein
发表
V. Bryksin,
D. N. Mirlin,
Yu.M. Gerbstein,
1972
.
V. Vikhnin,
F. A. Chudnovskiǐ,
E. I. Nikulin,
1991
.
F. A. Chudnovskiǐ,
Yu.M. Gerbstein,
N. E. Timoshchenko,
1989
.