Writing-Papers-(Technical).md

@@ -108,6 +108,10 @@ good program source code.
   - Each keyword starts with a capital letter
   - If a keyword consists of multiple words, this only applies to the first of those words
   - Example: Software verification, Program analysis, SMT solving, Competition
+
+- References:
+  - For each reference, we provide a DOI (it is exists).
+
 ## BibTeX File
 - Use meaningful BibTeX keys (tool or concept, name of an author,
   perhaps add conference or year).