@article{418283,
      author = {Mickens, Ronald E.,},
      url = {http://library.usi.edu/record/418283},
      title = {Truly nonlinear oscillations harmonic balance, parameter  expansions, iteration, and averaging methods / [electronic  resource] :},
      publisher = {World Scientific,},
      recid = {418283},
      pages = {xxi, 238 p. :},
      address = {Singapore ;},
      year = {2010},
}