DOC: Add references in bib file.

REFERENCES.bib

@@ -0,0 +1,33 @@
+@article{mohr2012-1,
+  title = {{{CODATA}} Recommended Values of the Fundamental Physical Constants: 2010},
+  author = {Mohr, Peter J and Taylor, Barry N and Newell, David B.},
+  date = {2012},
+  journaltitle = {Review of Modern Physics},
+  volume = {84},
+  keywords = {CODATA},
+  file = {C:\Users\mskocic\Documents\05-Library\01-Papers\Mohr et al. - 2012 - CODATA recommended values of the fundamental physi.pdf}
+}
+
+@article{mohr2016-1,
+  title = {{{CODATA}} Recommended Values of the Fundamental Physical Constants: 2014},
+  author = {Mohr, Peter J and Taylor, Barry N and Newell, David B.},
+  date = {2016},
+  journaltitle = {Journal of Physical and Chemical Reference Data},
+  volume = {45},
+  keywords = {CODATA},
+  file = {C:\Users\mskocic\Documents\05-Library\01-Papers\Mohr et al. - 2016 - CODATA recommended values of the fundamental physi.pdf}
+}
+
+@article{mohr2021-1,
+  title = {{{CODATA}} Recommended Values of the Fundamental Physical Constants: 2018},
+  author = {Mohr, Peter J and Taylor, Barry N and Newell, David B.},
+  date = {2021},
+  journaltitle = {Review of Modern Physics},
+  volume = {93},
+  keywords = {CODATA},
+  file = {C:\Users\mskocic\Documents\05-Library\01-Papers\Mohr et al. - 2021 - CODATA recommended values of the fundamental physi.pdf}
+}
+
+@Comment{jabref-meta: databaseType:bibtex;}
+
+@Comment{jabref-meta: saveOrderConfig:table;author;false;year;false;title;false;citationkey;false;}