found: His Veroi︠a︡tnostnye metody v teorii chisel, 1962.
found: Profesorius Jurgis Lebedys, 1983:verso t.p. (dr. Jonas Kubilius)
found: Jonynas, I. Istorijos baruose, 1984:t.p. verso (Jonas Kubilius)
found: Liet. taryb. encik.(Jonas Kubilius, b. July 27, 1921; mathematician also public activist and writer on Vilnius Univ.)
found: Lithuanian Wikipedia WWW site, Nov. 2, 2011(Jonas Kubilius; b. July 27, 1921, Fermos, Eržvilko seniūnija, Jurbarko rajonas; d. Oct. 30, 2011; mathematician; rector of Vilnius University, 1958-1991)