diff --git a/README.md b/README.md
index 465d29f..5f0d77c 100644
--- a/README.md
+++ b/README.md
@@ -158,6 +158,7 @@ const solution = foil.solve();
 1. Drela, M. "XFOIL: An Analysis and Design System for Low Reynolds Number Airfoils" (1989)
 2. Katz, J. & Plotkin, A. "Low-Speed Aerodynamics" (2001)
 3. Cebeci, T. & Bradshaw, P. "Momentum Transfer in Boundary Layers" (1977)
+4. Fidkowski, K. J. "A Coupled Inviscid-Viscous Airfoil Analysis Solver, Revisited," *AIAA Journal*, Vol. 60, No. 5, 2022, pp. 2961–2971. [doi:10.2514/1.J061341](https://doi.org/10.2514/1.J061341)
 
 ## License
 
diff --git a/THIRD_PARTY_NOTICES.md b/THIRD_PARTY_NOTICES.md
index 4bb9f01..9f24c22 100644
--- a/THIRD_PARTY_NOTICES.md
+++ b/THIRD_PARTY_NOTICES.md
@@ -47,7 +47,7 @@ TypeWithKnife.
 - **Path:** `mfoil/mfoil.py`
 - **Author:** Krzysztof J. Fidkowski
 - **License:** MIT
-- **Source:** <https://github.com/kjfid/mfoil>
+- **Source:** <https://websites.umich.edu/~kfid/codes.html>
 - **Description:** Python-based airfoil analysis code used as a reference
   implementation during development.
 
@@ -63,3 +63,4 @@ contain any XFOIL source code. The mathematical methods are documented in:
   Airfoils" (1989)
 - Drela, M. & Giles, M. B. "Viscous-Inviscid Analysis of Transonic and Low
   Reynolds Number Airfoils" (1987)
+