Journal of Automata, Languages and Combinatorics

@article{jalc160205,
  author  = {Artur Je\.{z} and Tomasz Jurdzi{\'n}ski},
  title   = {Length-reducing Automata (almost) without Auxiliary Symbols},
  journal = jalc,
  year    = 2011,
  volume  = 16,
  number  = {2--4},
  pages   = {141--164}
}