@article{Kułyk:2020,
  author  = "P. Kułyk and Ł. Augustowski",
  title   = "Conditions of the Occurrence of the Environmental Kuznets Curve in Agricultural Production of Central and Eastern European Countries",
  journal = "Energies",
  volume  = "Vol. 13",
  number  = "iss. 20",
  pages   = "1--22",
  year    = "2020",
}