added citation notice

README.rst

@@ -134,3 +134,27 @@ A little benchmark with randomly generated inputs (:code:`np.random.randint(0, 2
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 | 100 000 | too long  | 55.04712     |        |
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+
+Citation
+--------
+
+If you use eTaPR, please cite the original author/paper:
+
+.. code::
+
+    @inproceedings{10.1145/3477314.3507024,
+    author = {Hwang, Won-Seok and Yun, Jeong-Han and Kim, Jonguk and Min, Byung Gil},
+    title = {"Do You Know Existing Accuracy Metrics Overrate Time-Series Anomaly Detections?"},
+    year = {2022},
+    isbn = {9781450387132},
+    publisher = {Association for Computing Machinery},
+    address = {New York, NY, USA},
+    url = {https://doi.org/10.1145/3477314.3507024},
+    doi = {10.1145/3477314.3507024},
+    booktitle = {Proceedings of the 37th ACM/SIGAPP Symposium on Applied Computing},
+    pages = {403–412},
+    numpages = {10},
+    keywords = {accuracy metric, anomaly detection, precision, recall, time-series},
+    location = {Virtual Event},
+    series = {SAC '22}
+    }