@misc{indiciaea014375f62e7, title = {Direct instantons in QCD nucleon sum rules.}, author = {H Forkel and MK Banerjee}, year = {1993}, doi = {10.1103/physrevlett.71.484}, url = {https://pubmed.ncbi.nlm.nih.gov/10055288/}, note = {Source identifier: 10055288} }