@article{GENERAL,
      author = {Thomas, K H W},
      url = {http://library.imarest.org/record/1770},
      journal = {Transactions},
      title = {An Introduction to the Vortex Theory of Propellers},
      abstract = {The recorded history of the Institute, technical papers,  documented discussion and author reply.},
      number = {GENERAL},
      recid = {1770},
      address = {1948},
}