@article{cohen-kapchits-07,
author = "Reuven Cohen and Boris Kapchits",
title =  "An Optimal Wake-Up Scheduling Algorithm for
          Minimizing Energy Consumption while Limiting Maximum Delay in a Mesh
Sensor Network",
journal =  "IEEE/ACM Transactions on Networking",
volume = 17,
number = 2,
month =  apr,
year =   2009,
Note      = "An earlier version was presented in Infocom'2007"
}