HSYRF
in the future
in the past
- HSYRF 2022
17-18 February,
Leiden, Netherlands
- HSYRF 2021
Six Tuesdays & Fridays in April and May,
Brussels, Belgium / Leiden, Netherlands
- HSYRF 2020
6-7 March,
Brussels, Belgium
- HSYRF 2019
8-9 March,
Leiden, Netherlands
- HSYRF 2018
2-3 March,
Brussels, Belgium