@article{Rybakowski:2014,
  author  = "M. Rybakowski and G. Dudarski and E. Kowal",
  title   = "Research and analysis of noise emitted by vehicles according to the type of surface roads and driving speed",
  journal = "European Journal of Environmental and Safety Sciences",
  volume  = "Vol. 2",
  number  = "iss. 2",
  pages   = "71--78",
  year    = "2014",
}