Plagiarism is the deliberate and unlawful acquisition of foreign intellectual property. Author uses wholly or partially foreign works in a separate work, without specifying the source. These include in particular the following cases:
The person gives a foreign work (taxte, pictures, etc.)
without the consent of the actual author or the actual author as his own.
Quote without slip
The person takes over parts of a foreign work without corresponding reference to the source.
The person gives his own one and the same work in several occasions. Use existing own texts, images of existing work, without showing any existing information to the original work.
Source: The information of the University of Vienna.