During her stay at the Roman Institute (Oct. 2023), Dr Gordana Jeremić will deal with topics from early Christian archaeology and the history of this discipline, especially with regard to Sebien. She is interested in the work of the first explorer of the early Christian necropolis of Sirmium (today Sremska Mitrovica), the archaeologist and priest Adolf Hytrek, from the circle around Anton de Waal, rector of Campo Santo Teutonico. She would like to present the results of her research at the 18th International Congress of Christian Archaeology in Belgrade 18th International Congress of Christian Archaeology in Belgrade and in a corresponding publication.