1. Calabi E. Minimal immersions of surfaces in Euclidean spheres. J Differential Geom, 1967, 1: 111–125
2. Castro I, Chen B Y. Lagrangian surfaces in complex Euclidean plane via spherical and hyperbolic curves. Tohoku Math J (2), 2006, 1: 565–579
3. Castro I, Urbano F. Lagrangian surfaces in the complex Euclidean plane with conformal Maslov form. Tohoku Math J (2), 1993, 1: 565–582
4. Castro I, Urbano F. On a minimal Lagrangian submanifold of ℂn foliated by spheres. Michigan Math J, 1999, 1: 71–82
5. Castro I, Urbano F. Willmore Lagrangian surfaces of C2 and the Whitney sphere. Ann Global Anal Geom, 2001, 1: 153–175