@article{861669,
      author = {Ushakov, V. I͡A. and Vajov, V. F., and Zinoviev, N. T.,},
      url = {http://library.usi.edu/record/861669},
      title = {Electro-discharge technology for drilling for wells and  concrete destruction /},
      recid = {861669},
      pages = {1 online resource},
}