Since the 20th of April 2020 series Collectanea Studiorum et Textuum’s fourth volume, namely Formularium Ecclesiae Strigoniensis' first editions are available for everyone on our website. This volume is a remarkable result of a project from 2018 which was supported by the Péter Pázmány Catholic University. Cardinal Péter Erdő, Kornél Szovák, Gábor Sarbak and the leader of the research group Péter Tusor participated in the project. This volume and related projects showing perfectly what is the purpose and task of the Hungarian Catholic University according to Fraknói Research Group. After publishing Formularium Ecclesiae Strigoniensis it was presented in both Rome, and Budapest.