Added missing DOIs

Author: SKopecz

paper/paper.bib

@@ -290,7 +290,8 @@ @article{bolley1978conservation
   number={3},
   pages={237--245},
   year={1978},
-  publisher={EDP Sciences}
+  publisher={EDP Sciences},
+  doi = {10.1051/m2an/1978120302371}
 }
 
 @book{gottlieb2011strong,
@@ -299,7 +300,8 @@ @book{gottlieb2011strong
   author={Gottlieb, Sigal and Ketcheson, David I and Shu, Chi-Wang},
   year={2011},
   publisher={World Scientific},
-  address={Singapore}
+  address={Singapore},
+  doi = {10.1142/7498}
 }
 
 @article {Bruggeman2007,
@@ -479,4 +481,4 @@ @article{Ortleb2017
   doi = {10.1063/1.4992489},
   url = {https://doi.org/10.1063/1.4992489},
   eprint = {https://pubs.aip.org/aip/acp/article-pdf/doi/10.1063/1.4992489/13749027/320008\_1\_online.pdf},
-}
+}