@article{kaplan-kay-1994-regular, title = "Regular Models of Phonological Rule Systems", author = "Kaplan, Ronald M. and Kay, Martin", editor = "Hirschberg, Julia", journal = "Computational Linguistics", volume = "20", number = "3", year = "1994", address = "Cambridge, MA", publisher = "MIT Press", url = "https://preview.aclanthology.org/fix-sig-urls/J94-3001/", pages = "331--378" }