TY - RPRT TI - Ontology formalization of product semantics for product lifecycle management AU - Patil, Lalit AU - Dutta, Debasish AU - Sriram, Ram D PY - 2005 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 7274 DO - 10.6028/NIST.IR.7274 ER -