VIGELAND, Magnus Dehli. The group law on a tropical elliptic curve. Mathematica Scandinavica, Berkeley, CA, United States, v. 104, n. 2, p. 188–204, 2009. DOI: 10.7146/math.scand.a-15094. Disponível em: https://journals.msp.org/mscand/article/view/603. Acesso em: 24 jul. 2026.