Fee based sites
Experts can be found under topics such as Evidence, Witnesses, Cross-examinations.
Expert Evidence - Glenn Anderson
KF 8964 A92 2009
Witnesses - Alan Mewett
KF 8950 M488 1991+
Cross-examination: science and techniques - Pozner
KF 8920 P68 2004
We can also search for recent commentary about expert witnesses such as QL, LawSource and Federated Press: Corporate Litigation Series and US Journals and commentary as well.
Moore v. Getahum