@book{GW99,
  address = {Berlin -- Heidelberg},
  author = {Ganter, B. and Wille, R.},
  interhash = {1b0bf49069eadcdfac42e52addf4eb9d},
  intrahash = {ee411290ea5b80d257ac115b2738237c},
  location = {Santa Barbara, CA},
  publisher = {Springer},
  title = {Formal Concept Analysis: Mathematical Foundations},
  year = 1999
}