@inproceedings{hewitt2020rnns,
 author = {John Hewitt and Michael Hahn and Surya Ganguli and Percy Liang and Christopher D. Manning},
 booktitle = {Empirical Methods in Natural Language Processing (EMNLP)},
 title = {RNNs can generate bounded hierarchical languages with optimal memory},
 url = {https://nlp.stanford.edu/pubs/hewitt2020rnns.pdf},
 year = {2020}
}