M.I. BELISHEV; A.F. VAKULENKO. On algebraic and uniqueness properties of harmonic quaternion fields on 3d manifolds. CUBO, A Mathematical Journal, [S. l.], v. 21, n. 1, p. 01–19, 2019. DOI: 10.4067/S0719-06462019000100001. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/2115. Acesso em: 17 may. 2024.