Numerical problems connected with accuracy of variance estimation. - Marcin Kozak; Jakub Paderewski; Andrzej Zielinski (Model. Assist. Stat. Appl., 2006)

Polish agricultural universities students' graphical perception. - Marcin Kozak; Ewa Bakinowska; Jakub Paderewski (Model. Assist. Stat. Appl., 2009)