From 1be511d5827fbd74a4c58d6b6cd0335ad54a0966 Mon Sep 17 00:00:00 2001
From: MaxVZIKM <147824975+MaxVZIKM@users.noreply.github.com>
Date: Thu, 18 Apr 2024 13:58:37 +0200
Subject: [PATCH] Added reference for density update

---
 docs/src/literate-gallery/topology_optimization.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/src/literate-gallery/topology_optimization.jl b/docs/src/literate-gallery/topology_optimization.jl
index 8ad7356c09..9fc9ab3bce 100644
--- a/docs/src/literate-gallery/topology_optimization.jl
+++ b/docs/src/literate-gallery/topology_optimization.jl
@@ -273,7 +273,7 @@ end
 #md nothing # hide
 
 # Finally, we put everything together to update the density. The loop ensures the stability of the 
-# updated solution.
+# updated solution, see [JanHacJun2019regularizedthermotopopt](@cite) equation (42) for reference.
 
 function update_density(dh, states, mp, ρ, topology, Δh)
     n_j = Int(ceil(6*mp.β/(mp.η*Δh^2))) # iterations needed for stability