Ricardo A. Baeza-Yates Julien Masanès Marc Spaniol The 1st temporal web analytics workshop (TWAW). 307-308 2011 WWW (Companion Volume) http://doi.acm.org/10.1145/1963192.1963325 conf/www/2011c db/conf/www/www2011c.html#Baeza-YatesMS11