Restore refs.bib for bibliographic references

source/refs.bib

+
+@manual{          NEMO_man,
+  title         = "NEMO ocean engine",
+  series        = "Scientific Notes of Climate Modelling Center",
+  number        = "27",
+  author        = "Gurvan Madec and NEMO System Team",
+  institution   = "Institut Pierre-Simon Laplace (IPSL)",
+  publisher     = "Zenodo",
+  issn          = "1288-1619",
+  doi           = "10.5281/zenodo.1464816"
+}
+%   edition="vX.X",
+%   year="YYYY"
+
+@manual{          SI3_man,
+  title         = "Sea Ice modelling Integrated Initiative (SI$^3$) -- The
+                  NEMO sea ice engine",
+  series        = "Scientific Notes of Climate Modelling Center",
+  number        = "31",
+  author        = "NEMO Sea Ice Working Group",
+  institution   = "Institut Pierre-Simon Laplace (IPSL)",
+  publisher     = "Zenodo",
+  issn          = "1288-1619",
+  doi           = "10.5281/zenodo.1471689"
+}
+%   edition="vX.X",
+%   year="YYYY"
+
+@manual{          TOP_man,
+  title         = "Tracers in Ocean Paradigm (TOP) -- The NEMO passive
+                  tracers engine",
+  series        = "Scientific Notes of Climate Modelling Center",
+  number        = "28",
+  author        = "NEMO TOP Working Group",
+  institution   = "Institut Pierre-Simon Laplace (IPSL)",
+  publisher     = "Zenodo",
+  issn          = "1288-1619",
+  doi           = "10.5281/zenodo.1471700"
+}
+%   edition="vX.X",
+%   year="YYYY"
+
+@article{         TAM_pub,
+  title         = "NEMOTAM: Tangent and Adjoint Models for the ocean
+                  modelling platform NEMO",
+  pages         = "1245--1257",
+  journal       = "Geoscientific Model Development",
+  volume        = "8",
+  number        = "4",
+  author        = "Vidard, A. and Bouttier, P.-A. and Vigilant, F.",
+  year          = "2015",
+  doi           = "10.5194/gmd-8-1245-2015"
+}