COMPMID-1744: Add paper references in graph models.

Change-Id: I031488247673de305f63b2a2e636f4cb17bd57f2
diff --git a/examples/graph_cl_shufflenet.cpp b/examples/graph_cl_shufflenet.cpp
index 70695ba..0db34d6 100644
--- a/examples/graph_cl_shufflenet.cpp
+++ b/examples/graph_cl_shufflenet.cpp
@@ -240,6 +240,11 @@
 
 /** Main program for ShuffleNet
  *
+ * Model is based on:
+ *      https://arxiv.org/abs/1707.01083
+ *      "ShuffleNet: An Extremely Efficient Convolutional Neural Network for Mobile Devices"
+ *      Xiangyu Zhang, Xinyu Zhou, Mengxiao Lin, Jian Sun
+ *
  * @note To list all the possible arguments execute the binary appended with the --help option
  *
  * @param[in] argc Number of arguments