Good white paper sources?

Does any one have any good provider they could recommend for fixed income white papers. I’ve looked at Morningstar and Forefield but they are just generic financial advisor type items. Looking for some general pieces about duration targeting, what an MBS is, about the current interest rate environment etc. Thanks.

Journal of Financial and Quantitative Analysis

Journal of Finance

Journal of Financial Economics

Review of Financial Studies

Journal of Fixed Income ended up being pretty good, any other advice is appreciated

SSRN

Thats pretty good systematic, but I guess I’m looking for the 2-4 page range.

If you insist… but thats where the Phd level research lives… just saying…

Most of the CFAI text books are based on the same stuff, they offer pretty good condensed versions.