Solár, J. “Development of the Road Network in the Submountain Area of the High Tatra Mountains As a Potential Source of Heavy Metal Pollution: A Case Study of the Kežmarok Town”. Oecologia Montana, Vol. 18, no. 1-2, Dec. 2009, pp. 14-19, https://om.vuvb.uniza.sk/index.php/OM/article/view/208.