van Cranenburgh, Andreas, Remko Scha, and Rens Bod. “Data-Oriented Parsing With Discontinuous Constituents and Function Tags”. Journal of Language Modelling 4, no. 1 (April 13, 2016): 57–111. Accessed June 27, 2022. https://jlm.ipipan.waw.pl/index.php/JLM/article/view/100.