@article{cohen-segall94,
 author =  "Reuven Cohen and Adrian Segall",
 title = "Multiple Logical Token-Rings in a Single High-Speed Ring",
 journal =  "IEEE Transactions on Communications",
 Vol. 42, No. 4, April 1994.
 volume = 42,
number = 4,
month =  apr,
year =   1994,
}