B-Sides Ljubljana will be held April 4th, 2020 in Ljubljana, Slovenia.
You can download it from the following link: https://packetstormsecurity.com/files/download/155481/bsidesljubljana2020-cfp.txt
Source: https://packetstormsecurity.com/files/155481/BSidesLjubljana-2020-Call-For-Papers.html