Stebli ordovikskih morskih lilii Pribaltiki (niznii ordovik) [Stems of Ordovician crinoids from the Baltic Sea area, (Lower Ordovician)] - 1964
Stebli ordovikskih morskih lilii Pribaltiki (srednii ordovik) [Stems of Ordovician crinoids from the Baltic Sea area (Middle Ordovician)] - 1966