@article{1428606,
      author = {Kershner, William K. and Kershner, William C.},
      url = {http://library.usi.edu/record/1428606},
      title = {The Basic Aerobatic Manual : With Spin and Upset Recovery  Techniques.},
      recid = {1428606},
      pages = {1 online resource (128 pages).},
}