Attainment of O/W emulsions containing liquid crystal from Annatto oil(Bixa orellana), coffee oil, and tea tree oil(Melaleuca alternifolia) as oily phase using HLB system and ternary phase diagram - Morais, Gilsane G.; Santos, Orlando D. H.; Oliveira, Wanderley Pereira de; Rocha Filho, Pedro Alves da (Journal of Dispersion Science and Technology, 2008)