Szwalec, Artur, et al. “Physicochemical and Geotechnical Properties of an Ash-Slag Mixture Deposited on a Landfill in Terms of Its Use in Engineering”. Geology, Geophysics and Environment, vol. 43, no. 2, Jan. 2018, p. 127, https://doi.org/10.7494/geol.2017.43.2.127.