Date of birth	1936
Date of death	2006
Occupation	apulaisprofessori
Other Forms of Name	Hakkarainen, Heikki Juhani (1936-2006)
Identifiers	0000000083442103 (isni) http://urn.fi/URN:NBN:fi:au:finaf:000043008 (finaf)
Sources	Helsingin Sanomat 24.5.2006