SEDLIAČIKOVÁ, Mariana - ŠATANOVÁ, Anna - BIERNACKA, Justyna. Performance measurement of processes through Six Sigma method in furniture company. In Annals of Warsaw University of Life Sciences. ISSN 1898-5912, 2013, no. 84, p. 165-169. VEGA 1/0581/12 ; VEGA 1/0268/13.