@Article{Maas03,
  author = 	 {Moritz G. Maa{\ss}},
  title = 	 {Linear Bidirectional On-Line Construction of Affix Trees},
  journal = 	 {Algorithmica},
  year = 	 2003,
  volume =	 37,
  number =	 1,
  pages =	 {43--74},
  month =	 {jun},
  abstract =	 {Affix trees are a generalization of suffix trees that is based on the inherent duality of suffix trees induced by the suffix links. An algorithm is presented that constructs affix trees on-line by expanding the underlying string in both directions and that has linear time complexity.}
}