A bond rating is a grade given to a bond by various rating services, which evaluate an issuer's financial strength.
Understanding Different Bond Ratings - FasterCapital
Fallen Angel Bonds and Rising Stars: Risks and Opportunities
Ratings Service
Corporate Bond Credit Ratings Scales: Moody's, S&P, Fitch
Bond rating: Bond Ratings and Discount Bonds: Assessing
Are High-Risk Bonds Really Too Risky?
Introduction to Bond Market - Institute of Bankers Malaysia
Bond Ratings and Credit Risk
How Are Bonds Rated?, rated