Shahram Ghandeharizadeh Shyam Kapadia Bhaskar Krishnamachari PAVAN: a policy framework for content availabilty in vehicular ad-hoc networks. 57-65 2004 conf/mobicom/2004vanet Vehicular Ad Hoc Networks http://doi.acm.org/10.1145/1023875.1023885 db/conf/mobicom/vanet2004.html#GhandeharizadeKK04