TY - JOUR A1 - Kregel, Ingo A1 - Ogonek, Nadine A1 - Matthies, Benjamin T1 - Competency Profiles for Lean Professionals – An International Perspective JF - International Journal of Productivity and Performance Management Y1 - 2019 U6 - http://dx.doi.org/10.1108/IJPPM-09-2017-0237 SN - 1741-0401 VL - 68 (2) SP - 423 EP - 446 ER -