Reference:
Pekka Orponen. "P = NP" -ongelma ja laskennan vaativuusteoria. Tietojenkäsittelytiede, 26:54–67, 2007.
Suggested BibTeX entry:
@article{Orpo07, author = {Pekka Orponen}, journal = {Tietojenk{\"a}sittelytiede}, pages = {54--67}, title = {"{P} = {NP}" -ongelma ja laskennan vaativuusteoria}, volume = {26}, year = {2007}, }