The Opole Studies in Administration and Law is a participant of Similarity Check, a service offered by CrossRef and powered by iThenticate software.

iThenticate is a plagiarism screening service that verifies the originality of written work. iThenticate checks submissions against millions of published, scholarly works, and billions of web content. Authors, researchers and freelancers can also use iThenticate to screen their work before submission by visiting

 See more: