 At the same time he wrote and published in the national press poems and critical articles on literature, in 1962 published his first book of poems.In 1964, Bučys received an invitation from the Institute of Lithuanian language and literature to finish postgraduate studies at the Institute of World literature in Moscow (ИМЛИ).In 1968 he defended his thesis "The Problem of the novel in contemporary Lithuanian literature" for the degree of candidate of philological Sciences.