Even today, lack of sources and comparative materials hinder further research of Elamite.

He stressed the importance of empirical comparative material guided by theoretical hypothesis.

Given the bulk and inaccessibility of the comparative material, it is difficult to be sure how distinctive is.

Recently Michael Weiss has advanced the view that this was a new year ritual on the grounds of comparative material.

It is also very good on illustrations of comparative material.

Also there was a lack of comparative material, because Addy never got any previous passport control.

Third, I would not limit comparative materials to formal court decisions.

Neither I nor my law clerks can easily find relevant comparative material on our own.

A general introductory survey of trade unions which includes much comparative material is the short book by Jackson (1982).

They also contain comparative material from other parts of Europe and other continents.