ANDREJKOVIČ, Marek - BESLEROVÁ, Stela - HAJDUOVÁ, Zuzana. Use of Statistical Methods in Six Sigma Projects. - Registrovaný: Web of Science. In The 8th International Days of Statistics and Economics. The 8th International Days of Statistics and Economics: Prague, September 11-13, 2014 : conference proceedings. - Prague : Melandrium, 2014. ISBN 978-80-87990-02-5, p. 11-20 online.