An Analytical Model of Information Dissemination for a Gossip-based   Protocol
  We develop an analytical model of information dissemination for a gossiping protocol that combines both pull and push approaches. With this model we analyse how fast an item is replicated through a network, and how fast the item spreads in the network, and how fast the item covers the network. We also determine the optimal size of the exchange buffer, to obtain fast replication. Our results are confirmed by large-scale simulation experiments. 
Rena Bakhshi and Daniela Gavidia and Wan Fokkink and Maarten van Steen