diff --git a/Istanbul Stock Exchange/README.md b/Istanbul Stock Exchange/README.md
index e2c27cb..42c3c4c 100644
--- a/Istanbul Stock Exchange/README.md
+++ b/Istanbul Stock Exchange/README.md
@@ -46,4 +46,4 @@ Feel free to explore the data set with multiple **supervised** and **unsupervise
 This data set has been sourced from the Machine Learning Repository of University of California, Irvine [Istanbul Stock Exchange Data Set (UC Irvine)](https://archive.ics.uci.edu/ml/datasets/ISTANBUL+STOCK+EXCHANGE). 
 The UCI page mentions the following paper as the original source of the data set:
 
-*Akbilgic, O., Bozdogan, H., Balaban, M.E., (2013) A novel Hybrid RBF Neural Networks model as a forecaster, Statistics and Computing. DOI 10.1007/s11222-013-9375-7 *
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+*Akbilgic, O., Bozdogan, H., Balaban, M.E., (2013) A novel Hybrid RBF Neural Networks model as a forecaster, Statistics and Computing. DOI 10.1007/s11222-013-9375-7*
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