1. Additive functionals;Chacon, R. V.;Arch. Rational Mech. Anal.,1965
2. On orthogonally additive functionals;Drewnowski, L.;Bull. Acad. Polon. Sci. S\'{e}r. Sci. Math. Astronom. Phys.,1968
3. Additive functionals of 𝐿_{𝑝} spaces;Friedman, N.;Canadian J. Math.,1966
4. A representation theorem for additive functionals;Friedman, N.;Arch. Rational Mech. Anal.,1966