Decu, S., Petrovic-Torgasev, M., Sebekovic, A., & Verstraelen, L. (2010). On the intrinsic Deszcz symmetries and the extrinsic Chen character of Wintgen ideal submanifolds. Tamkang Journal of Mathematics, 41(2), 109–116. https://doi.org/10.5556/j.tkjm.41.2010.662