Update: all three convicted to various degrees.
The 23 year old, involved in all three bomb gets 8 years 6 months.
The 50 year old, convicted as an accessory in one of the succesfull bombings, and the failed attempt gets 5 years.
The 20 year old, convicted as an accessory in the failed attempt gets 1 year and 6 months.
This next part is sort of a headscratcher, I'm not sure if it's just error in reporting or the wording of the sentencing:
The 23 year old and the 50 year old are aquitted of attempted murder/aggrevated assault in one of the successfull bombings (where a janitor was injured), but are still ordered to pay damages.
Edit:
News source in Swedish
News source with google translate
Press release from the court (Swedish)
Google Translate of press release