@article{405021,
      author = {Thede, Les},
      url = {http://library.usi.edu/record/405021},
      title = {Practical analog and digital filter design [electronic  resource] /},
      publisher = {Artech House,},
      recid = {405021},
      pages = {xiii, 267 p. :},
      address = {Boston :},
      year = {2004},
}