diff --git a/data_structures/binary_tree/lca.py b/data_structures/binary_tree/lowest_common_ancestor.py
similarity index 95%
rename from data_structures/binary_tree/lca.py
rename to data_structures/binary_tree/lowest_common_ancestor.py
index c18f1e944..2109500a2 100644
--- a/data_structures/binary_tree/lca.py
+++ b/data_structures/binary_tree/lowest_common_ancestor.py
@@ -1,3 +1,6 @@
+# https://en.wikipedia.org/wiki/Lowest_common_ancestor
+# https://en.wikipedia.org/wiki/Breadth-first_search
+
 import queue