@article{frengley:12-congs,
  author        = {Frengley, Sam},
  title         = {On $12$-congruences of elliptic curves},
  journal       = {Int. J. Number Theory},
  fjournal      = {International Journal of Number Theory},
  volume        = {20},
  year          = {2024},
  number        = {2},
  pages         = {565--601},
  issn          = {1793-0421,1793-7310},
  mrclass       = {11G05 (11F80)},
  mrnumber      = {4709643},
  doi           = {10.1142/S1793042124500301},
  url           = {https://doi.org/10.1142/S1793042124500301},
}