<a href="http://cs-tr.cs.cornell.edu:80/TR/CORNELLCS:TR95-1500"> Horus: A Flexible Group Communications System </a>, Robbert van Renesse, Kenneth P. Birman, Brad Glade, Katie Guo, Mark  Hayden, Takako Hickey, Dalia Malki, Alex Vaysburd and Werner Vogels,  <i>CS-TR 95-1500</i>, March 23, 1995. </UL>
