Fossil insects Cretaceous - references

[Jorge SantiagoBlay]

Hi:

I am trying (unsuccessfully thus far) to get a hold of references (from 1993 on)
of fossil insects from
 Liaoning (China), Baisa (Russia), Gippsl
and (Australia), Orapa (Botswana),  and Bon Tsa
gan, Gurvan and several others from Mongolia.

Specifically, anything comprehensive on insects (or better, beetles) would be
great (even if not Cretaceous).  Thus far, I have failed in locating such
references.

Thanks for any hints.

Jorge