@conference{1312426, author = {Nehika Mathur and Yong Han Kim and Ritbik Kumar and JW Sutherland}, title = {A Semi-Markov Chain approach to temporally quantify critical materials across multiple product life cycles: Hard Disk Drives}, year = {2026}, month = {2026-04-30 04:04:00}, publisher = {CIRP Annals, Turin, IT}, url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=961402}, doi = {https://doi.org/10.1016/j.cirp.2026.04.101}, language = {en}, }