diff --git a/docs/paper/paper.bib b/docs/paper/paper.bib
index b36621b..c3b378c 100644
--- a/docs/paper/paper.bib
+++ b/docs/paper/paper.bib
@@ -132,7 +132,7 @@ @article{Fredj2016
  number = {9},
  pages = {586–599},
  publisher = {Wiley},
- title = {The particle tracking and analysis toolbox (PaTATO) for Matlab: PaTATO for Matlab},
+ title = {{The particle tracking and analysis toolbox (PaTATO) for Matlab: PaTATO for Matlab}},
  url = {http://dx.doi.org/10.1002/lom3.10114},
  volume = {14},
  year = {2016}
@@ -206,7 +206,7 @@ @article{Lange2017
  number = {11},
  pages = {4175–4186},
  publisher = {Copernicus GmbH},
- title = {Parcels v0.9: prototyping a Lagrangian ocean analysis framework for the petascale age},
+ title = {{Parcels v0.9: prototyping a Lagrangian ocean analysis framework for the petascale age}},
  url = {http://dx.doi.org/10.5194/gmd-10-4175-2017},
  volume = {10},
  year = {2017}
@@ -280,7 +280,7 @@ @article{Delandmeter2019
  number = {8},
  pages = {3571–3584},
  publisher = {Copernicus GmbH},
- title = {The Parcels v2.0 Lagrangian framework: new field interpolation schemes},
+ title = {{The Parcels v2.0 Lagrangian framework: new field interpolation schemes}},
  url = {http://dx.doi.org/10.5194/gmd-12-3571-2019},
  volume = {12},
  year = {2019}
@@ -351,7 +351,7 @@ @article{Meijer2021
  month = {April},
  number = {18},
  publisher = {American Association for the Advancement of Science (AAAS)},
- title = {More than 1000 rivers account for 80% of global riverine plastic emissions into the ocean},
+ title = {More than 1000 rivers account for 80\% of global riverine plastic emissions into the ocean},
  url = {http://dx.doi.org/10.1126/sciadv.aaz5803},
  volume = {7},
  year = {2021}