@unpublished{PaulEMcKenney2007WhatIsRCUFundamentally ,Author="Paul E. McKenney and Jonathan Walpole" ,Title="What is {RCU}, Fundamentally?" ,month="December" ,day="17" ,year="2007" ,note="Available: \url{http://lwn.net/Articles/262464/} [Viewed December 27, 2007]" ,annotation=" Lays out the three basic components of RCU: (1) publish-subscribe, (2) wait for pre-existing readers to complete, and (2) maintain multiple versions. " }