HSYRF

 
in the future
 
• More information will follow in due course.
   
  
 
in the past
 
• HSYRF 2023
  31 March - 1 April,
  Leiden, Netherlands
   
  
• 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