For example, a study in Heliyon [1] has delivered sharp bounds for the second and third Hankel determinants for starlike and convex functions associated with a three-leaf-shaped domain.

Patricia Balvanera, Claire Kremen, , Applying Community Structure Analysis to Ecosystem Function: Examples from Pollination and Carbon Storage, Ecological Applications, Vol. 15, No. 1 (Feb., 2005), pp ...

SIAM Journal on Numerical Analysis, Vol. 20, No. 6 (Dec., 1983), pp. 1170-1186 (17 pages) ...