TY  - RPRT
TI  - Entanglement constrained by superselection rules.
AU  - Stephen D Bartlett
AU  - H M Wiseman
PY  - 2003
DO  - 10.1103/physrevlett.91.097903
UR  - https://pubmed.ncbi.nlm.nih.gov/14525211/
ID  - 14525211
ER  -