Stoyko Stoykov

Stoykov's scholarly activities were in the fields of Bulgarian Dialectology, Phonetics and Lexicology.

His valuable contributions are the monographies "The Banat Dialect" ("Банатският говор") (1967) and "The Lexics of the Banat Dialect" ("Лексиката на банатския говор") (1968) as well as the comparative study "The Dialect of Tvardica village (Bulgaria) and Tvardica village (Moldova)" ("Говорът на с. Твърдица (Сливенска околия в България) и на с. Твардица (Молдавска ССР)") (in Russian, 1958).

Stoykov was the leader and direct participant in the development of "Atlas of Bulgarian Dialects" ("Български диалектен атлас") (in 4 volumes, 1964–1981).

Stoykov contributed to the development of Bulgarian Lexicography and Lexicology being co-author of "Orthographical and Orthoepy Manual" ("Правописен и правоговорен наръчник") (1945, 3rd revised edition entitled "Правописен речник на българския книжовен език", 1954) and "Bulgarian Language Dictionary" ("Български тълковен речник") (1955, 4th edition 1994), as well as one of the editors of "Dictionary of the Contemporary Bulgarian Literary Language" ("Речник на съвременния български книжовен език") (3 volumes, 1955–1959).

He also published studies dedicated to the literary works of Bulgarian Renaissance writers and poets.