Tsvirko, D., W. Tołoczko, and P. Kittel. “Ash Admixtures Formed During the Loss on Ignition (LOI) Procedure and Their Impact on Laser Textural Analysis Results”. Geology, Geophysics and Environment, vol. 50, no. 2, June 2024, pp. 155-74, doi:10.7494/geol.2024.50.2.155.