@article{UltschLoetsch2014,
  author    = {Alfred Ultsch and J{\"o}rn L{\"o}tsch},
  title     = {Functional abstraction as a method to discover knowledge in gene ontologies},
  journal   = {PLoS One},
  volume    = {9},
  number    = {(2):e90191},
  doi       = {10.1371/journal.pone.0090191},
  year      = {2014},
}