Cover -- EDITORIAL ADVISORY BOARD -- Editorial -- Investigating the green impact of Lean, Six Sigma and Lean Six Sigma -- Maintaining sustainable performance in operating petroleum assets via a lean-six-sigma approach -- Lean Six Sigma and environmental sustainability: the case of a Norwegian...

Purpose – In this era of globalisation, as competition intensifies, providing quality products and services has become a competitive advantage and a need to ensure survival. The Six Sigma's problem-solving methodology DMAIC has been one of the several techniques used by organisations to...

Purpose The academic literature and research lines exploring the effect of quality improvement methods on environmental performance still remain in early stages. The purpose of this paper is therefore to investigate, through a systematic review of the existing academic literature, the...