Danfoss

year of pub­li­ca­ti­onISBNauthor(s)title
1991978-87-87411-04-2DanfossWissenswertes über Frequenzumrichter
1997978-87-87411-16-5   ''Wissenswertes über Frequenzumrichter (WüF)
1998978-87-87411-22-6facts worth knowing about frequency converters