TY  - RPRT
TI  - Quark singlets: Implications and constraints.
AU  - V Barger
AU  - MS Berger
AU  - RJ Phillips
PY  - 1995
DO  - 10.1103/physrevd.52.1663
UR  - https://pubmed.ncbi.nlm.nih.gov/10019388/
ID  - 10019388
ER  -