" (Journal Article in "Harvard Ukrainian studies", 1978)*The Pechenegs: A Case of Social and Economic Transformation (Journal Article in Archivum Eurasiae medii aevi), 1975*"Two Migratory Movements in the Eurasian Steppe in the 9th-11th Centuries".
" (Journal Article in "Harvard Ukrainian studies", 1978)*"The Pechenegs: A Case of Social and Economic Transformation" (Journal Article in Archivum Eurasiae medii aevi), 1975*"Two Migratory Movements in the Eurasian Steppe in the 9th-11th Centuries".