Vowel split in Hungan (Bantu H42, Kwilu, DRC): A contact-induced language-internal change.Published in:Journal of Historical Linguistics, 2011, v. 1, n. 2, p. 247, doi. 10.1075/jhl.1.2.04bosBy:Bostoen, Koen;Muluwa, Joseph KoniPublication type:Article