update packages

lisp/org-ref/org-ref.bib

@@ -235,7 +235,8 @@
   eprint =	 { http://dx.doi.org/10.1021/acscatal.5b00538 },
 }
 
-@online{jkitchin76:online,
+@misc{jkitchin76:online,
+  author =	 {John Kitchin},
   title =	 {jkitchin/org-ref: org-mode modules for citations,
                   cross-references, bibliographies in org-mode and useful bibtex
                   tools to go with it.},
@@ -290,7 +291,7 @@
 @article{xu-2017-first-princ,
   author =	 {Xu, Zhongnan and Salvador, Paul A. and Kitchin, John R.},
   title =	 {First-Principles Investigation of the Epitaxial Stabilization
-                  of Oxide Polymorphs: \ce{TiO2} on \ce{(Sr,Ba)TiO3}},
+                  of Oxide Polymorphs: \ce{TiO2} on \ce{(Sr{,}Ba)TiO3}},
   journal =	 {ACS Applied Materials \& Interfaces},
   volume = 	 {9},
   number = 	 {4},