1. Akutagawa, K., Nishikawa, S.: The Gauss map and spacelike surfaces with prescribed mean curvature in Minkowski 3-space. Tôhoku Math. J. 42, 67–82 (1990)
2. Bracken, P.: The generalized Weierstrass system inducing surfaces of constant and nonconstant mean curvature in Euclidean three space. J. Comput. Appl. Math. 202, 122–132 (2007)
3. Bracken, P.: On the construction of integrable surfaces on Lie groups. Appl. Math. Comput. 261, 167–175 (2015).
4. Chern, S.S.: An elementary proof of the existence of isothermal parameters on a surface. Proc. Am. Math. Soc. 6(5), 771–782 (1955)
5. Fokas, A.S., Gelfand, I.M.: Surfaces on Lie groups, on Lie algebras, and their integrability. Commun. Math. Phys. 177, 203–220 (1996)