improved tutorial 4

Author: simongravelle

docs/sphinx/source/journal-article.bib

@@ -16,6 +16,19 @@ @article{lorentz1881ueber
   publisher={WILEY-VCH Verlag Leipzig}
 }
 
+@article{wolde-kidanInterplayInterfacialViscosity2021,
+  title = {Interplay of {{Interfacial Viscosity}}, {{Specific-Ion}}, and {{Impurity Adsorption Determines Zeta Potentials}} of {{Phospholipid Membranes}}},
+  author = {{Wolde-Kidan}, Amanuel and Netz, Roland R.},
+  year = {2021},
+  month = jul,
+  journal = {Langmuir},
+  volume = {37},
+  number = {28},
+  pages = {8463--8473},
+  issn = {0743-7463, 1520-5827},
+  doi = {10.1021/acs.langmuir.1c00868},
+}
+
 @article{ryckaert1977numerical,
   title={Numerical integration of the cartesian equations of motion of a system with constraints: molecular dynamics of n-alkanes},
   author={Ryckaert, Jean-Paul and Ciccotti, Giovanni and Berendsen, Herman JC},

docs/sphinx/source/tutorials/level2/nanosheared-electrolyte.rst

@@ -857,7 +857,7 @@ Imposed shearing
 
     Another important point to keep in mind is that the viscosity of a fluid
     next to a solid surface is typically larger than in bulk due to interaction with the
-    walls. Therefore, one expects the present simulation to return 
+    walls :cite:`wolde-kidanInterplayInterfacialViscosity2021`. Therefore, one expects the present simulation to return 
     a viscosity that is slightly larger than what would
     be measured in the absence of a wall.