I︠U︡riĭ Romanovych Sheli︠a︡h-Sosonko, Konferent︠s︡ii︠a︡ "Fitosot︠s︡iolohii︠a︡ 100 rokiv naukovo napri︠a︡mku" (veresenʹ 2000 Kyïv] (Ukirane))