@misc{indiciae92e223bf7cb2, title = {Quantum reference frames from top-down crossed products}, author = {Ali Ahmad, Shadi (ORCID:0000000289234254) and Chemissany, Wissam (ORCID:0000000291134463) and Klinger, Marc S. (ORCID:0009000176661185) and Leigh, Robert G. (ORCID:0000000160054922)}, year = {2024}, doi = {10.1103/physrevd.110.065003}, url = {https://www.osti.gov/biblio/2440057}, note = {Source identifier: 2440057} }