Maria-Esther Vidal Louiqa Raschid Julián Mestre Challenges in Selecting Paths for Navigational Queries: Trade-Off of Benefit of Path versus Cost of Plan. 61-66 2004 conf/webdb/2004 WebDB db/conf/webdb/webdb2004.html#VidalRM04 http://webdb2004.cs.columbia.edu/papers/5-1.pdf