Also update a reference.

Co-authored-by: Marc Fehling <mafehling.git@gmail.com>

diff --git a/advection_reaction_estimator/README.md b/advection_reaction_estimator/README.md
index 37879403e215603e406e802e44937272d6207be5..b33d7940355741324c08f6e446b703e6ef42c580 100644 (file)
--- a/advection_reaction_estimator/README.md
+++ b/advection_reaction_estimator/README.md
@@ -35,7 +35,7 @@ classical DG theory, we need to ensure that
 @f[
 c(x) - \frac{1}{2}\nabla \cdot b \geq \gamma_0 >0
 @f]
-for some positive $\gamma_0$ so that we have coercivity in $L^2$ at the continuous level. Discrete coercivity is achieved by using a stronger norm which takes care of jumps, see Di-Pietro Ern [1] for details.
+for some positive $\gamma_0$ so that we have coercivity in $L^2$ at the continuous level. Discrete coercivity is achieved by using a stronger norm which takes care of jumps, see Di Pietro and Ern [2] for details.
 
 
 ## The weak formulation: