тык http://www.progarchives.com/Bands-country.asp?country=178 https://en.wikipedia.org/wiki/Progg https://sv.wikipedia.org/wiki/Progg http://www.swedenprog.se/ http://swedishprogg.blogspot.ru/ http://www.europopmusic.eu/Newsletters/Features/Protest_68/1968_in_Sweden.html