CHIANG, Yik-Man; YU, Guo-Fu. Galoisian approach to complex oscillation theory of some Hill equations. Mathematica Scandinavica, Berkeley, CA, United States, v. 124, n. 1, p. 102–131, 2019. DOI: 10.7146/math.scand.a-110889. Disponível em: https://journals.msp.org/mscand/article/view/243. Acesso em: 24 jul. 2026.