@misc{indiciaec0399f4d80b1,
  title = {On a Question About Generalized Congruence Subgroups. I},
  year = {2019},
  doi = {10.1007/s10958-019-04557-7},
  url = {https://www.osti.gov/biblio/22921136},
  note = {Source identifier: 22921136}
}