Evaluating the Relative Performance of Engineering Design Projects: A Case Study Using Data Envelopment Analysis. - Jennifer A. Farris; Richard L. Groesbeck; Eileen M. Van Aken; Geert Letens (IEEE Trans. Engineering Management, 2006)

Improving Product Development Performance Through Iteration Front-Loading. - Hilda C. Martinez-Leon; Jennifer A. Farris; Geert Letens (IEEE Trans. Engineering Management, 2013)