Your search returned the following 2 documents:

2. Faster Coupon Collecting via Replication with Applications in Gossiping
   Petra Berenbrink, Tom Friedetzky, Robert Elsaesser, Lars Nagel, and Thomas Sauerwald
   In: 36th International Symposium on Mathematical Foundations of Computer Science (MFCS-11), Warsaw, Poland, 2011, 72-83
   
1. Tight bounds for the cover time of multiple random walks
   Robert Elsaesser and Thomas Sauerwald
   Theoretical Computer Science 412 (24): 2623-2641, 2011