Before revision: Schaufeli, W. B.
After revision: The psychometric properties of the MBI have proved somewhat problematic (e.g., in terms of factorial validity and measurement invariance), casting doubt on the conceptual coherence and syndromal cohesiveness of burnout.Beer, L. T. D., Vaart, L. v. d., Escaffi-Schwarz, M., Witte, H. D.,Schaufeli, W. B.