We are currently doing research on business model innovation (BMI), and we are now searching for empirical research that operationalize and measure BMI. The closest thing we have found so far is a paper by Zott and Amit (2007), where they use a 13-item scale that measures novelty in business model design. However, does anyone know about other publications measuring BMI? Basically, we are looking for developed and preferably validated measures or scales that we can use in our own research. We are thankful for any advice on this matter.