Mubarok, A. A., Susanto, H. and Maheresmi, H. (2025) “The Role of Lean Operations on Company Performance Mediated by Six Sigma at the Yogyakarta Regional Public Service Agency (BLUD)”, RSF Conference Series: Business, Management and Social Sciences, 5(2), pp. 472–481. doi: 10.31098/bmss.v5i2.1048.