Bibliography of International Congresses of Slavists (BibSlavKon)

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 P1816 provides 12 hits
11	Ulogata na makedonskiot jazik vo formiranjeto i razvitokot na nacionalnata svest (so poseben osvrt na „makedonizmot“ na Stojan Novakovik) Ristovski, Blaže - Prilozi = Contributions 27 (2002) 1/2, 39–57
12	Narodni jezik u književnosti srpskohrvatskog jezičkog područja u predvukovskom periodu sa posebnim osvrtom na bosansko-hercegovačke prilike Peco, A. - Prilozi za književnost, jezik, istoriju i folklor (1973), 58-72

Bibliography of International Congresses of Slavists (BibSlavKon)

Ulogata na makedonskiot jazik vo formiranjeto i razvitokot na nacionalnata svest (so poseben osvrt na „makedonizmot“ na Stojan Novakovik)

Narodni jezik u književnosti srpskohrvatskog jezičkog područja u predvukovskom periodu sa posebnim osvrtom na bosansko-hercegovačke prilike