 He became interested in Interlingua soon after the Soviet invasion of Czechoslovakia in August 1968, when Bent Andersen, then administrator of the Union Mundial pro Interlingua, sent him a letter about the language.In Krupina, Tomin taught Interlingua for many years to help his students understand the international words in their own language.His first article on Interlingua was published in the Slovak magazine "Príroda a spoločnosť" (Nature and Society) in 1971.