Reference:
Ilkka Niemelä. Annual report for the year 1989. Helsinki University of Technology, Digital Systems Laboratory, Espoo, Finland, 1990.
Suggested BibTeX entry:
@misc{Niemela89:annual, author = {Ilkka Niemel{\"a}}, howpublished = {Helsinki University of Technology, Digital Systems Laboratory, Espoo, Finland}, title = {Annual Report for the Year 1989}, year = {1990}, }