For every paper that appears in the proceedings at least one of the authors must register before 01st of February 2021.
| Early registration: | before 1st of February 2021 | 50 € |
| Late registration: | from 1st of February 2021 | 65 € |
Attention: at the moment the only paymend methods are bank transfer, Visa card or American Express (no Master card)!