Due to the current development of Covid-19 situation internationally & new regulations of the Republic of Bulgaria, Protstab 2021 will take place as an online-only event



Registration fees include attendance to the online conference scientific sessions via Zoom, e-attendance certificate.

Document confirming student status must be sent to

Abstract submission and registration

Please note that the presenting author of the abstract must be registered for the conference in order to have abstract accepted and published in conference abstract book.  Author is not automatically registered by submitting an abstract. Registration implies payment of the registration fee.

Cancellation & name change

No refunds will be made for cancellations after September 15 2021. Cancellations will be processed if notified in writing to the Congress Organising Secretariat

Name change deadline: September  20, 2021. Please send your name change request to


Participation Certificate
Participation certificates will be sent by e-mail to all registered participants within 3 days after the conference.