1 files changed, 9 insertions, 1 deletions
diff --git a/README.md b/README.md
index 0f97408..ff5541d 100644
--- a/README.md
+++ b/README.md
@@ -45,4 +45,12 @@ Bug#2:
 Traceback (most recent call last):
   File "./src/storode.py", line 340, in <module>
     with open(requirement_out_file, 'w') as out_file:
-FileNotFoundError: [Errno 2] No such file or directory: './doc/englishpal-srs_with_id.html'
-\ No newline at end of file
+FileNotFoundError: [Errno 2] No such file or directory: './doc/englishpal-srs_with_id.html'
+
+
+References
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- 金雄镕. (2020). Cross-referencing requirements and source code to reduce software maintenance cost. 浙江师范大学大学毕业论文.
+
+- 韩金彤. (2021). 将代码与需求互索引可以降低维护费用吗？ 浙江师范大学大学毕业论文.
+\ No newline at end of file