The abstracts (in two languages) can be found in the pdf file of the article.
Original author name(s) and title in Russian and Lithuanian:
В. Г. Спринджук, О теоремах А. Я. Хинчина и И. П. Кубилюса
V. Sprindžiuk, Apie A. Chinčino ir J. Kubiliaus teoremas