ClayLab, a computer program for processing and interpretation of x-ray diffractograms of clays / K. MYSTKOWSKI // W: EUROCLAY 1999 : conference of the European Clay Groups Association : September 5–9, 1999 Kraków, Poland : program with abstracts. — Kraków : Institute of Geological Sciences PAN, 1999. — ISBN10: 83-909970-2-9. — S. 114

K-Ar dating of illite and illite-smectite treated with alkylammonium cations / K. MYSTKOWSKI, N. Clauer, Z. KŁAPYTA, J. Środoń // W: EUROCLAY 1999 : conference of the European Clay Groups Association : September 5–9, 1999 Kraków, Poland : program with abstracts. — Kraków : Institute of Geological Sciences PAN, 1999. — ISBN10: 83-909970-2-9. — S. 115