@article{savitch-1989-formal,
    title = "A Formal Model for Context-Free Languages Augmented with Reduplication",
    author = "Savitch, Walter",
    journal = "Computational Linguistics",
    volume = "15",
    number = "4",
    year = "1989",
    url = "https://preview.aclanthology.org/Author-Pages-WenzhengZhang-ZhengyanShi-ShuYang/J89-4003/",
    pages = "250--261"
}