@misc{89656, author = {Eswaran Subrahmanian and Yoram Reich}, title = {Advancing Problem Definition and Concept Generation for Improved Product Life Cycle Management}, year = {2007}, month = {2007-07-01}, publisher = {NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.IR.7430}, language = {en}, }