TY  - RPRT
TI  - Axial anomaly and pion mass difference.
AU  - Fayyazuddin
AU  - Riazuddin
PY  - 1990
DO  - 10.1103/physrevd.42.2347
UR  - https://pubmed.ncbi.nlm.nih.gov/10013091/
ID  - 10013091
ER  -