@misc{indiciae5e9d0eb7c695,
  title = {On the loop approximation in nucleon QCD sum rules},
  author = {Ryskin, M. G. and Sadovnikova, V. A.},
  year = {2015},
  doi = {10.1134/s1063778815070054},
  url = {https://www.osti.gov/biblio/22472091},
  note = {Source identifier: 22472091}
}