Introductory texts on mathematical modeling of mortgage-backed securities (MBS) can be found in finance journals like the Journal of Finance and the Journal of Portfolio Management. MBS emerged in the early 1980s, necessitating methods to value these bonds, particularly regarding the prepayment option of underlying mortgages. Investment banks published extensive materials to aid bond portfolio managers in understanding prepayments and MBS valuation. For further research, a simple Google search can yield additional resources. Understanding these concepts is crucial for effective MBS analysis.