1. Fractional powers of closed operators and the semi-groups generated by them;Balakrishnan;Pacific J. Math.,1969
2. On the inequality ∥f″∥2 ⩽ K ∥f∥ ∥f(4)∥;Bradley;Quart. J. Math. Oxford Ser.,1974
3. Landau-Kolmogorov inequalities for semigroups;Certain,1977
4. Some remarks on inequalities of Landau and Kolmogorov;Ditzian;Aequationes Math.,1975
5. Integral inequalities and spectral theory;Everitt,1975