@article{FassbenderVogler1994,
  author    = {Faßbender, Heinz and Vogler, Heiko},
  title     = {A universal unification algorithm based on unification-driven leftmost outermost narrowing},
  series = {Acta Cybernetica. 11 (1994), H. 3},
  journal   = {Acta Cybernetica. 11 (1994), H. 3},
  isbn      = {0324-721x},
  pages     = {139 -- 167},
  year      = {1994},
  language  = {en}
}