From 554ce67609072444cb1923eb4e2ca0274908aea4 Mon Sep 17 00:00:00 2001
From: Fan <fanhaozh@38f9d3e5ca30.ant.amazon.com>
Date: Wed, 14 Aug 2019 19:00:15 +0800
Subject: [PATCH] add technical report citation

---
 src/operator/numpy/linalg/np_gesvd-inl.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/operator/numpy/linalg/np_gesvd-inl.h b/src/operator/numpy/linalg/np_gesvd-inl.h
index cbe65e2297ce..efcc65ae3f47 100644
--- a/src/operator/numpy/linalg/np_gesvd-inl.h
+++ b/src/operator/numpy/linalg/np_gesvd-inl.h
@@ -111,7 +111,9 @@ void NumpyLaGesvdForward(const nnvm::NodeAttrs& attrs,
   });
 }
 
-// Helper for gesvd_backward. See technical report for details
+// Helper for gesvd_backward. See technical report
+// `Auto-Differentiating Linear Algebra` for details
+// on https://arxiv.org/pdf/1710.08717.pdf
 template<typename DType>
 DType gesvd_back_helper_eps(DType* X);