1. On minimal immersions of S2 into S2m;Barbosa;Trans. Am. Math. Soc.,1975
2. Representations of Compact Lie Groups;Bröcker,1985
3. On conformal minimal immersions of S2 into CPn;Bolton;Math. Ann.,1988
4. Minimal 2-spheres with constant curvature in CPn;Bando;J. Math. Soc. Jpn.,1987
5. The explicit construction of all harmonic two-spheres in G2(Rn);Bahy-El-Dien;J. Reine Angew. Math.,1989