Vourdoubas, J. . “Carbon Neutral Campsites Due to Operational Energy Use in the Mediterranean Region: Are They Feasible?”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 60, no. 1, Nov. 2019, pp. 202-11, https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/5226.