@article{Barmpalias2026SpeedabilityComputablyApproximable,
  author  = {G. Barmpalias and N. Fang and W. Merkle and I. Titov},
  title   = {Speedability of computably approximable reals and their approximations},
  journal = {Inf. Comput.},
  volume  = {311},
  pages   = {105451},
  year    = {2026},
}