root.bib: Add missing commas in martin87 and meyer88

diff --git a/src/root.bib b/src/root.bib
index 6915d813784945a2fbb6990d753c9f05918e858c..fd943d33f30374e92625dbc86bcd326c8cd5ddc8 100644 (file)
--- a/src/root.bib
+++ b/src/root.bib
@@ -8890,12 +8890,12 @@
        surfaces of electronic materials.",
        issn = "0021-8979",
        issn_online = "1089-7550",
-  doi = "10.1063/1.338807"
+  doi = "10.1063/1.338807",
   URL = "http://jap.aip.org/resource/1/japiau/v61/i10/p4723_s1",
   language = "eng",
 }
 
-@article{ meyer88
+@article{ meyer88,
   author = GMeyer #" and "# NMAmer,
   title = "Novel optical approach to atomic force microscopy",
   journal = APL,