diff --git a/.gitignore b/.gitignore
index da9b65d..80e90c4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+.ltex
 SOCadmissible
 SOCgen
 SOCgraphviz
diff --git a/README.md b/README.md
index c47ba28..fcbb5f1 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ SOC stands for **S**OC **O**bservation **C**ode, and is composed of three C prog
 - and the last, `SOCgraphviz`, to translate adjacency matrices into the [Graphviz language](https://graphviz.org/).
 - The python script `/tools/removeiso.py` removes isomorphic graphs.
 
-The first two programs are used in support of Conjecture 1 in the article [Admissible Causal Structures and Correlations, arXiv:2210.12796 \[quant-ph\]](https://arxiv.org/abs/2210.12796).
+The first two programs are used in support of Conjecture 1 in the article [Admissible Causal Structures and Correlations, PRX Quantum 4, 040307 (2023)](https://doi.org/10.1103/PRXQuantum.4.040307) ([arXiv:2210.12796 \[quant-ph\]](https://arxiv.org/abs/2210.12796)).
 
 ## Installation
 First, clone this repository, and then simply run