@inproceedings{muller-2006-representing,
    title = "Representing and Accessing Multi-Level Annotations in {MMAX}2",
    author = {M{\"u}ller, Christoph},
    booktitle = "Proceedings of the 5th Workshop on {NLP} and {XML} ({NLPXML}-2006): Multi-Dimensional Markup in Natural Language Processing",
    year = "2006",
    url = "https://preview.aclanthology.org/fix-sig-urls/W06-2712/"
}