This excellent paper on implementing culture change in healthcare; theory and practice was published 10 years ago. It's still relevant and there is no need to start another cohort of research on the theory now that "culture" is a big theme for the NHS.
Readers of this blog will know my aversity to the continuous stream of repetitive research - with insufficient action to put it into practice. Culture is a difficult topic. The word defies easy definition yet it's bandied around as both a devil and panacea - a cause of and a solution to the problems facing the NHS.
This paper is available free of charge and is worthy of a read and discussion with your colleagues.