Milad Shokouhi Falk Scholer Justin Zobel Sample Sizes for Query Probing in Uncooperative Distributed Information Retrieval. 63-75 2006 conf/apweb/2006 APWeb http://dx.doi.org/10.1007/11610113_7 db/conf/apweb/apweb2006.html#ShokouhiSZ06