Do pytannja pro klasyfikaciju nyžn'opaleolityčnych kam'janych vyrobiv za schemoju V. Gladylina. To the question of classification of the lower palaeolithic stoneware diagram of V. Gladilin - Sytnyk, Oleksandr (Studia Archaeologica. Naukovnyj Žurnal z Problem Archeologiji ta Davn'oji Istoriji Ukrajiny, 1 (1993), 1993)