diff --git a/doc/src/pair_lj_smooth_linear.txt b/doc/src/pair_lj_smooth_linear.txt
index 5721b02eb37f8ca30c7468f69b675728444f4911..a48c441f54381cd3bd6630bdb7c3012e77a33d9b 100644
--- a/doc/src/pair_lj_smooth_linear.txt
+++ b/doc/src/pair_lj_smooth_linear.txt
@@ -104,3 +104,8 @@ This pair style can only be used via the {pair} keyword of the
 "pair_coeff"_pair_coeff.html, "pair lj/smooth"_pair_lj_smooth.html
 
 [Default:] none
+
+:line
+
+:link(Toxvaerd)
+[(Toxvaerd)] Toxvaerd, Dyre, J Chem Phys, 134, 081102 (2011).