Forms of doctoral thesis can be:
- scientific monograph;
- a collection of published scientific papers accompanied by a critical review consisting of an introduction, discussion, conclusion and review of relevant literature. Scientific papers must fully correspond to the defended topic of the doctoral thesis and be fully consistent with the committee report submitted after the public defense of the doctoral thesis topic. All elements presented in the published papers: hypotheses, methodology and scientific contribution must be in complete, unambiguous agreement with all parts of the research proposed in the application for the doctoral thesis topic. Scientific papers that are combined into a doctoral thesis must consist of at least three original scientific papers published in a journal indexed in the upper median (Q1 and Q2 quartiles according to Journal Citation Reports (JCR)) of the subject category relevant to the scientific field and field of the doctoral thesis in which the doctoral candidate is the sole first author. At least two of the three published papers must be published in a journal in the Q1 quartile. A maximum of two papers may be published in the same journal and in the journal of the same publisher, and this rule will be deviated from in the case of publication of papers in journals that belong to the top 3% of journals with the highest impact factor (Impact Factor - IF according to JCR), within the subject category.