@inproceedings{
    Jappinen88a,
    author = {J{\"{a}}ppinen, Harri and Honkela, Timo and Hy{\"{o}}tyniemi, Heikki and Lehtola, Aarno},
    publisher = "IEEE (The Computer Society of the IEEE)",
    booktitle = "Proceedings of CAIA'88, 4th Conference on Artificial Intelligence Applications",
    year = "1988",
    pages = "332-337",
    title = "Hierarchical Multilevel Processing Model for Natural Language Database Interface"
}