Bakker, P. & Kyuchukov, H. (1999). Romski dumi v tainija ezik na njakoj socialni grupi v tursija. In M. Videnov (Ed.), Problems of Sociolinguistics VI. Language and Contemporary Reality. Procedings of the Sixth International Sociolinguistic Conference, Shoumen, September 26-30, 1997(pp. 275-277). Mezdunarodno sociolinvisticesko druzestvo.
Dahl, P. & Stecher-Hansen, M. (Ed.) (1999). Thorkild Bjørnvig. In Dictionary of Literary Biography: Twentieth-Century Danish Writers (Vol. 214, pp. 32-40). Bruccoli Clark Layman.
Haverling, G. (1999). Über Aktionsarten und Präfixe im Spätlatein. In H. Petersmann & R. Ketteman (Eds.), Latin vulgaire - latin tardif V: Actes du Ve Colloque International sur le latin vulgaire et tardif, Heideblerg 5-8 septembre 1997 (pp. 235-249). Stollfuß Medien.