The submission deadline was June 20 2014 (Post stamp on this date is accepted).
The 2014 regulations can be found here.
When you've filled in the entry form you may proceed to send a dvd or blu ray labeled with the name and length of the film to the below address:
Stockholm International Film Festival
att: Program Department
Gamla Brogatan 19
111 20 Stockholm, Sweden
If you have any questions regarding your submission you may send an email to firstname.lastname@example.org
Our Junior festival, 7-12 April 2014
The submission deadline was January 15 2014 (Post stamp on this date is accepted).
Regulations can be found here