Representing Calendar Expressions with Finite-State Transducers that Bracket Periods of Time on a Hierachical Timeline Jyrki Niemi author Kimmo Koskenniemi author 2007-05 text Proceedings of the 16th Nordic Conference of Computational Linguistics (NODALIDA 2007) Joakim Nivre editor Heiki-Jaan Kaalep editor Kadri Muischnek editor Mare Koit editor University of Tartu, Estonia Tartu, Estonia conference publication niemi-koskenniemi-2007-representing https://aclanthology.org/W07-2457/ 2007-05 355 362