Paul L. Krapivsky
发表
Mark Crovella,
David Finkel,
John W. Byers,
2003
.
Nikolai V. Brilliantov,
Yu. A. Andrienko,
Paul L. Krapivsky,
1994
.
Sidney Redner,
E. Ben-Naim,
S. Redner,
2003,
ArXiv.