Frequently Asked Questions

Submission, registration and payment

How do I submit a manuscript for the conference?


The submission of manuscripts and the review process in the conference is an exclusively online process. Visit https://cms.gnest.org/user/register and create an account. Then, after logging in to the website, you will be able to submit your abstract after choosing the "submit new full paper".




How can I pay the registration fees?


Payments for the registration fees for CEST2021 are processed through the eCommerce service provided by Alpha Bank Greece. Through Alpha Bank eCommerce we are accepting Credit card payments and bank transfers. Payment confirmation is sent by e-mail to the emails address provided by the Customer soon after acceptance of the payment (by credit card) has been processed by the bank. A receipt or invoice will be issued after your payment and will be delivered to the e-mail address provided during the payment within a week. Please keep in mind that online registration is mandatory in order for your payment to be confirmed and valid.

More info can be found at https://www.cest2021.gnest.org/online-payment




Can I cancel my registration for the conference?


Notice of cancellation must be prepared in writing and sent by email to cest@gnest.org. CEST2021 will refund fees as soon as possible and no later than one (1) month after the conference has concluded.

  • Cancellations received by June 30, 2021 at the latest: Full refund of fees paid less an administrative fee of 10%.

  • Cancellations received by July 31, 2021 at the latest: 50% refund of fees paid.

  • Cancellations received after July 31, 2021: No refund can be made.

Substitution Policy: Registrants may send a substitute in their place instead of requesting a refund.

CEST2021 is not responsible for travel expenses or penalties under any circumstances. In the event of a cancellation by CEST2021 Organizing Committee, all registrants will receive a full refund of any registration fees paid.




Can I make a name change to my registration?


Yes, you can change the name until 25 July 2021.

Any change request needs to be addressed at the conference secretariat by email at cest@gnest.org. Please refer to the paper id or invoice/receipt number in every communication.




Can I receive an invoice under my sponsoring Company/ Institution’s name?


Yes. If you require an invoice, please select the option “INVOICE” while registering. Once the option is selected, you will be asked to fill in the billing details of the company/institution the invoice should be issued to.




Can I register for the conference without paying?


You can submit your registration without paying, but in this case, your registration fees will be subject to changes according to the respective deadlines. Please note that a registration will only be considered valid when fully paid.




Can I register before the early fee deadline and pay later?


In order to benefit from the early registration fee, full payment must be completed before the deadline expires.




Can I register onsite?


Onsite registration will be available with the relevant period fee in the conference secretariat during the conference days. However, it is mostly suggested for conference attendants and not authors/presenters. To include your paper in the program and the proceedings, registration and payment must be completed.




What does my registration fee include? Are lunches, coffee breaks and/or dinners included in the registration fee?


Registration fees include conference material, entrance to CEST welcome party, beverages, coffee breaks, lunch breaks and the official conference dinner.




Will I receive a confirmation letter after I have finished registering?


Yes. A detailed confirmation letter and invoice/receipt will be sent to you via email as soon upon submission of your details in the services online form.





Papers and presentations

If I submit a paper do I have to attend the conference?


You only have to attend if you are the presenting author in an accepted paper.

Therefore, we encourage you to only submit your paper presuming you intend to attend the conference and present it.




Will the conference be physical or virtual?


CEST2021 Organizing Committee is watching closely the on-going development of the global spread of COVID-19, ensuring that all the latest guidelines are strictly followed. We wish to be able to organize a physical event, given the fact that the current situation will improve until September 2021. We have already decided that CEST2021 will be held as a hybrid event, so the opportunity of a virtual presentation will be provided to the participants.




I have submitted a paper, when will I know if it has been accepted?


All the authors will be notified of the final decision by 30 April 2021.




How can I make changes to a paper I have already submitted?


You can send us an email at cest@gnest.org with the exact corrections you wish to make, or the revised manuscript with the changes tracked on it.




Is there a specific template I have to use to submit my paper?


Please visit the relevant section of the website and follow instructions provided to submit your paper https://www.cest2021.gnest.org/guidelines-to-authors .





Invitation Letters

If I submit a paper do I have to attend the conference?


You only have to attend if you are the presenting author in an accepted paper.

Therefore, we encourage you to only submit your paper presuming you intend to attend the conference and present it.




Will the conference be physical or virtual?


CEST2021 Organizing Committee is watching closely the on-going development of the global spread of COVID-19, ensuring that all the latest guidelines are strictly followed. We wish to be able to organize a physical event, given the fact that the current situation will improve until September 2021. We have already decided that CEST2021 will be held as a hybrid event, so the opportunity of a virtual presentation will be provided to the participants.




I have submitted a paper, when will I know if it has been accepted?


All the authors will be notified of the final decision by 30 April 2021.




How can I make changes to a paper I have already submitted?


You can send us an email at cest@gnest.org with the exact corrections you wish to make, or the revised manuscript with the changes tracked on it.




Is there a specific template I have to use to submit my paper?


Please visit the relevant section of the website and follow instructions provided to submit your paper https://www.cest2021.gnest.org/guidelines-to-authors .





Contact us
Phone: (+30)210-6492451, (+30)210-6492452
Fax: (+30)210-6492499

Technical programme, scientific matters 

cest2021@aegean.gr 

Online registration, submission, payment,  

cest@gnest.org 

CEST2021
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