Lugupeetud professor Harald VelneristHaldre, Heiti; Maastik, AleksanderHarald-Adam Velner - insener ja veeteadlane1993 / lk. 29-30https://www.ester.ee/record=b1053756*est
To our senior, professor Harald VelnerHaldre, Heiti; Maastik, AleksanderHarald-Adam Velner - engineer and scientist1994 / p. 31-32https://www.ester.ee/record=b1053757*est