found: Work cat.: 97001501 : Ogbomo, O.W. When men and women mattered, 1997:p. 3 (Owan people) p. 10 (all Owan communities were independent of each other in the pre-colonial era. Hence they referred to themselves in disparate names such as Ora, Ozalla, Uokha, Ihievbe, Otuo, Emai, Iuleha, Ivbiaro, Warrake, Ohami, Ake, Ikhin, etc. At a point in their history the name Ivbiosakon meaning "the children of those who file their teeth," became synonymous with the Owan people.)
found: African ethnonyms, 1996(Ivbiosakon)
found: Ethnologue 2005(Emai-luleha-Ora; dialect cluster of Nigeria; alternate name: Kunibum, Ivbiosakon; Edoid group)
found: Wente-Lukas, R. Ethnic units in Nigeria, 1986:p. 183 (Ivbiosakon; subgroups:Ora, Usokha, luleha, Emai, Ozala, Otwa, Ikao, Iviadaobi, ivbieimion; Edo group with Yoruba influence)
notfound: Voegelin lang.