title: Study of Organic Residues on the Surface of Ceramic Fragments of Medieval Crimea
abstract: At the end of the 9th–11th centuries, in Crimea, in the Azov region, and the Lower Don, red-clay pottery high-necked jugs were used as containers for storing and transporting liquid or bulk products. Most of these vessels are covered with a thin layer of a resinous substance on the inside. The article presents a study of fragments of high-necked jugs with traces of tar on the inner side, found in 2018–2019, during excavations of a settlement on the Eski-Kermen plateau. It was established by gas 
journal: Nanobiotechnology Reports