diff --git a/main.tex b/main.tex
index 95a064b..34e423b 100644
--- a/main.tex
+++ b/main.tex
@@ -22,8 +22,9 @@ An equivalent formulation of \autoref{prob1} on graph is the following,
 
 \section{Existing algorithms}
 
-\subsection{subcubic combinatorial alg for detecting induced $C_4$}
-A recent paper \url{https://arxiv.org/pdf/2507.18845v1}.
+% not bipartite!
+% \subsection{subcubic combinatorial alg for detecting induced $C_4$}
+% A recent paper \url{https://arxiv.org/pdf/2507.18845v1}.
 
 
 \section{Finding $K_{2,\ell}$}