BibSlavKon: 3 hits for Hajdaj, Mychajlo

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 Hajdaj, Mychajlo provides 3 hits
1	Etyčni j estetyčni pryncypy u slov’jans’kij narodnij baladi Hajdaj, Mychajlo - 1978, 18 s.
2	Formy pobutuvannja slov‘jans’koji narodnoji epiky v systemi sučasnoji narodnoji kuľtury Juzvenko, Viktorija; Hajdaj, Mychajlo; Holovatjuk, V.; Pazjak, N.; Pazjak, N.; Pazjak, N.; Pazjak, N.; Pazjak, N. - Slov‘jans’kyj svit : ščoričnyk (1998), 55-70
3	Estetyka barokko u foľklori, mystectvi ta narodnomu teatri slov’jan Hajdaj, Mychajlo; Veselovs'ka, Hanna; Pylyns'kyj, Jaroslav; Stepovyk, Dmytro; Stepovyk, Dmytro; Stepovyk, Dmytro; Stepovyk, Dmytro; Stepovyk, Dmytro - Mystectvo, foľklor ta etnohrafija slov’jans’kych narodiv : XI Mižnarodnyj z’jizd slavistiv : Bratyslava, 30 serpnja - 8 veresnja 1993 r. (1993), 75-98

Bibliography of International Congresses of Slavists (BibSlavKon)

Etyčni j estetyčni pryncypy u slov’jans’kij narodnij baladi

Formy pobutuvannja slov‘jans’koji narodnoji epiky v systemi sučasnoji narodnoji kuľtury

Estetyka barokko u foľklori, mystectvi ta narodnomu teatri slov’jan