@book{JuergensenStaiger1999, author = {J{\"u}rgensen, Helmut and Staiger, Ludwig}, title = {Finite automata : encoding geometric figures}, series = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Informatik}, volume = {1999, 07}, journal = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Informatik}, publisher = {Univ.}, address = {Potsdam}, issn = {0946-7580}, pages = {8 S. : graph. Darst.}, year = {1999}, language = {en} }