Date of birth	1976
Identifiers	0000000484811803 (isni) http://urn.fi/URN:NBN:fi:au:finaf:000136866 (finaf)
Sources	Ovaskainen, Heikki. Timber harvester operators' working technique in first thinning and the importance of cognitive abilities on work productivity, 2009: t.p. (Heikki Ovaskainen) Suomen valtiokalenteri 2008