@article{58594,
      recid = {58594},
      author = {Kaplan, Wilfred,},
      title = {Operational methods for linear systems.},
      publisher = {Addison-Wesley Pub. Co.},
      address = {Reading, Mass.,},
      pages = {577 p.},
      year = {1962},
      url = {http://library.usi.edu/record/58594},
}