BibSlavKon: 2 hits for Numano, Mitsuyoshi

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 Numano, Mitsuyoshi provides 2 hits
1	Nabokov i Oleša : sravniteľnyj podchod k ich iskusstvu videť mir Numano, Mitsuyoshi - Comparative and Contrastive Studies in Slavic Languages and Literatures : Japanese Contributions to the XIth International Congress of Slavists : Bratislava, Aug. 31 - Sept. 7, 1993 (1993), 67-92
2	Utopičeskoje voobraženije v russkoj literature načala dvadcatogo veka : roman Jurija Oleši „Zavisť“, kak spletenije raznych „utopičeskich“ golosov Numano, Mitsuyoshi - Comparative and Contrastive Studies in Slavic Languages and Literatures : Japanese Contributions to the Tenth International Congress of Slavists : Sofia, September 14-21, 1988 (1988), 105-126

Bibliography of International Congresses of Slavists (BibSlavKon)

Nabokov i Oleša : sravniteľnyj podchod k ich iskusstvu videť mir

Utopičeskoje voobraženije v russkoj literature načala dvadcatogo veka : roman Jurija Oleši „Zavisť“, kak spletenije raznych „utopičeskich“ golosov