BibSlavKon: 4 hits for Eekman, T.

The Bibliography of International Congresses of Slavists (1929-2018) was converted from thirteen printed volumes into a database in cooperation with the Slavonic Library in Prague (Slovanská knihovna Praha) and contains 8550 records. Since 2008 the Bibliography appear only in electronic form and will be updated in five-year interval according to the next Congresses of Slavists. The further information can be found here. The overview of the classification can be found: here.

Your search for Eekman, T. provides 4 hits
1	Svobodnyj stich v poezii slavjanskich narodov XX veka Eekman, T. - American Contributions to the Ninth International Congress of Slavists : Kiev, September 1983 (1983), 149-172
2	Grammatičeskij i leksičeskij sostav jazyka Jurija Križaniča Eekman, T. - Dutch Contributions to the Fifth International Congress of Slavists : Sofia, 1963 (1963), 43-77
3	The War of Chotin in Literature : a Comparison of Some Poems about the Polish-Turkish War of 1621 in Slavic Literatures, and an Inquiry into the Problem of the Consciousness of Slavic Solidarity in These Poems Eekman, T. - Dutch Contributions to the Fourth International Congress of Slavicists : Moscow, September 1958 (1958), 41-85
4	The War of Chotin in Literature Eekman, T. - 1958, 45 s.

Bibliography of International Congresses of Slavists (BibSlavKon)

Svobodnyj stich v poezii slavjanskich narodov XX veka

Grammatičeskij i leksičeskij sostav jazyka Jurija Križaniča

The War of Chotin in Literature : a Comparison of Some Poems about the Polish-Turkish War of 1621 in Slavic Literatures, and an Inquiry into the Problem of the Consciousness of Slavic Solidarity in These Poems

The War of Chotin in Literature