@article{stokes1851,
       author = {{Stokes}, G.~G.},
        title = "{On the Effect of the Internal Friction of Fluids on the Motion of Pendulums}",
      journal = {Transactions of the Cambridge Philosophical Society},
         year = 1851,
        month = jan,
       volume = {9},
        pages = {8}
}
@book{kundu2015fluid,
title={Fluid Mechanics},
author={Kundu, P.K. and Cohen, I.M. and Dowling, D.R.},
isbn={9780124071513},
url={https://books.google.no/books?id=EehDBAAAQBAJ},
year={2015},
publisher={Academic Press}
}