Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author="Ellis, K. P.*" or (type exact bookEditor and editor="Ellis, K. P.*") Add to list Conference Paper C3 An approach for measuring the effectiveness of design tools in the new product development process J. A. Farris, E. M. Van Aken, Geert Letens (UGent) and K. P. Ellis (2005)