bib: added bibliography to pdf

notes/docs/bibliography.bib

@@ -1,7 +1,22 @@
 @article{cock41,
   title={The distribution of a product from several sources to numerous localities},
-  author={F. L. Hitchcock},
-  year={2942},
-  journal={Journal of Mathematical Physics},
-  pages={224 - 230}
+  author={Hitchcock, Frank L},
+  journal={Journal of mathematics and physics},
+  volume={20},
+  number={1-4},
+  pages={224 -- 230},
+  year={1941},
+  publisher={Wiley Online Library}
+}
+
+@article{ramdas17,
+  title={On wasserstein two-sample testing and related families of nonparametric
+         tests},
+  author={Ramdas, Aaditya and Trillos, Nicolas Garcia and Cuturi, Marco},
+  journal={Entropy},
+  volume={19},
+  number={2},
+  pages={47},
+  year={2017},
+  publisher={Multidisciplinary Digital Publishing Institute}
 }

notes/makefile

@@ -6,6 +6,7 @@ pandoc = \
 	--standalone          \
 	--pdf-engine=xelatex  \
 	-F pandoc-crossref    \
+	-F pandoc-citeproc    \
 	-o $(2).pdf
 
 all: exercises.pdf

notes/sections/8.md

@@ -0,0 +1 @@
+# Bibliography