On the fluctuation of brightness of the Milky Way / ირმის ნახტომის სიკაშკაშის ფლუქტუაციების შესახებ / О флуктуациях яркости млечного пути

It is assumed that the fluctuation of brightness in the Milky Way are caused by irregularities in the distribution of absorbing clouds in Galaxy. A theory of these fluctuations is given in the simple case, when all absorbing clouds have equal optical thickness. January, 1943