TATA A HABIB; GAMBO DANLADI; SHITTU A U. Design and Production of Collapsible Artist-Donkey for Drawing and Writing using Lines from Polynomials. Journal of African Innovation and Advanced Studies, Nigeria, v. 2, n. 2, 2023. Disponível em: https://africanscholarpub.com/ajaias/article/view/61.. Acesso em: 11 nov. 2026.