Merge pull request scikit-learn#4810 from mblondel/cite_api_paper

BibTeX entry for the API paper

Author: agramfort

doc/about.rst

@@ -10,7 +10,7 @@ About us
 Citing scikit-learn
 -------------------
 
-If you use scikit-learn in scientific publication, we would appreciate
+If you use scikit-learn in a scientific publication, we would appreciate
 citations to the following paper:
 
  `Scikit-learn: Machine Learning in Python
@@ -31,6 +31,27 @@ citations to the following paper:
     year={2011}
    }
 
+If you want to cite scikit-learn for its API or design, you may also want to consider the
+following paper:
+
+`API design for machine learning software: experiences from the scikit-learn
+project <http://arxiv.org/abs/1309.0238>`_, Buitinck *et al.*, 2013.
+
+Bibtex entry::
+
+    @inproceedings{sklearn_api,
+      author    = {Lars Buitinck and Gilles Louppe and Mathieu Blondel and
+                   Fabian Pedregosa and Andreas Mueller and Olivier Grisel and
+                   Vlad Niculae and Peter Prettenhofer and Alexandre Gramfort
+                   and Jaques Grobler and Robert Layton and Jake VanderPlas and
+                   Arnaud Joly and Brian Holt and Ga{\"{e}}l Varoquaux},
+      title     = {{API} design for machine learning software: experiences from the scikit-learn
+                   project},
+      booktitle = {ECML PKDD Workshop: Languages for Data Mining and Machine Learning},
+      year      = {2013},
+      pages = {108--122},
+    }
+
 Artwork
 -------