Proceedings of the Technical University of Sofia

Manuscripts may be submitted at any time throughout the year. There are no fixed submission periods. The Proceedings is published quarterly, and a new issue is opened every three months.

Each manuscript must be between 4 and 8 pages and must be prepared using the official template provided on the Proceedings website.

The manuscript should contain information about the authors, an abstract, keywords, a clearly structured introduction, the main scientific content including the methods used and, where appropriate, experimental or numerical results, conclusions clearly describing the scientific contributions, acknowledgment where applicable, and references.

Before submitting a manuscript, authors should carefully read the Instructions for Authors and verify that the manuscript complies with all formatting requirements.

An author may have no more than two manuscripts simultaneously under active consideration by the Proceedings. This limit applies regardless of whether the author is listed as corresponding author or co-author.

A new manuscript may be submitted after a final editorial decision has been made on one of the author's active submissions. The Editorial Board may allow exceptions in justified cases.

The Proceedings uses the internal e-University platform of the Technical University of Sofia to manage manuscript submission and peer review.

Authors who have not previously submitted a paper through the system must first create an account. Registered authors should log in to submit a manuscript and follow the editorial process.

For the review process, authors must upload both the PDF and DOC/DOCX versions of the manuscript.

Complete contact information must be provided for all authors. One author must be designated as the corresponding author. Proofs and other publication-related correspondence will be sent to the corresponding author.

By submitting the manuscript, the corresponding author confirms that all listed authors have approved the submitted version, have agreed to its submission to the Proceedings, and have authorized the corresponding author to communicate with the Editorial Board on their behalf.

The corresponding author is responsible for keeping all co-authors informed of the progress of the manuscript and of important editorial decisions and required actions.

Submitted manuscripts are assigned by the Editor-in-Chief to the appropriate Associate Editor according to the thematic area. The Associate Editor is responsible for selecting reviewers and coordinating the review process.

The Proceedings uses a single-blind peer-review process: the reviewers know the identities of the authors, while the identities of the reviewers are not disclosed to the authors.

Each manuscript is reviewed by two independent reviewers. If the reviewers provide substantially conflicting assessments, including clearly different publication recommendations or materially different conclusions regarding the scientific validity, originality, methodology, or reliability of the reported results, the Associate Editor may invite an additional independent reviewer before making a recommendation to the Editor-in-Chief.

When submitting a revised manuscript, authors must clearly indicate the changes made in response to the reviewers' comments, using a different text color.

A point-by-point response to all comments and recommendations of each reviewer must also be provided at the end of the revised manuscript. The responses should clearly explain how each comment has been addressed or, where a suggested change has not been made, provide an appropriate justification.

Authors are normally expected to submit the revised manuscript and the point-by-point response within 7 calendar days of receiving the revision request. If additional time is required, the corresponding author should contact the responsible Associate Editor before the revision deadline.

Authors may request withdrawal of a submitted manuscript by sending a written request to the Editor-in-Chief. The request must be submitted by the corresponding author and should state the reason for withdrawal.

A manuscript may normally be withdrawn before a final decision on publication has been made. After acceptance or after the article has entered the production process, withdrawal may be permitted only in exceptional circumstances and is subject to approval by the Editorial Board.

The final decision on publication is made by the Editor-in-Chief on the basis of the reviewers' reports, the authors' revisions, and the recommendation of the Associate Editor.

The Proceedings aims, where possible, to complete the editorial and publication process within approximately 20 days from submission. This period includes the peer-review, revision, and proof stages.

Longer processing times may be required when substantial revisions, additional reviews, delayed responses, or other circumstances affecting the editorial or publication process make this necessary.

After acceptance and preparation of the article for publication, proofs are sent to the corresponding author for final checking.

The corresponding author is expected to review and return the corrected proofs within 2 calendar days of receipt.

Corrections at the proof stage should normally be limited to typographical, formatting, and production errors. Substantial changes to the scientific content, results, authorship, or conclusions are not normally accepted at this stage and require approval by the Editorial Board.

The Proceedings of the Technical University of Sofia uses Crossref Similarity Check to screen submitted manuscripts for textual similarity and possible plagiarism.

By submitting a manuscript to the Proceedings of the Technical University of Sofia, the authors agree that the manuscript may be subjected to similarity checks during the peer-review and production processes.