Reference:

Aarno Lehtola, Timo Honkela, Heikki Hyötyniemi, and Harri Jäppinen. Task oriented knowledge representation languages for nlp-systems. In Proceedings of ISMIS'88, 3rd International Symposium on Methodologies for Intelligent Systems, pages 250–259. North-Holland, 1988.

Suggested BibTeX entry:

@inproceedings{Lehtola88ismis,
    author = {Aarno Lehtola and Timo Honkela and Heikki Hy{\"{o}}tyniemi and Harri J{\"{a}}ppinen},
    booktitle = {Proceedings of ISMIS'88, 3rd International Symposium on Methodologies for Intelligent Systems},
    pages = {250-259},
    publisher = {North-Holland},
    title = {Task Oriented Knowledge Representation Languages for NLP-Systems},
    year = {1988},
}