eshelby inclusion - primer to started wanted

Hi everybody,
for understanding some cae tools for short fiber composites, i need to get started on
the eshelby inclusion problem. Reading the paper from 1957, it appears well written.
However without any background, it is difficult.
I wonder if there are any light explainations to the problem freely available on the
web. Or some free course work for this topic could be useful.
Any link would be really apprecihated. Thanks,
schuffe