Maruta, Michał. 2021. “Possibility of Using a Portable Multi-Gas Detector Dräger X-Am 8000 for Monitoring Explosive Gases in the Area of Historical Oil and Gas Mines in the Podkarpackie Region”. Journal of Geotechnology and Energy 38 (2). https://doi.org/10.7494/jge.2021.38.2.4352.