1. W. D. L. Appling,Characterizations of some absolutely continuous additive set functions, Rendiconti del Circolo Matematico di Palermo, serie II, tomo 12 (1963), pp. 347–352.
2. W. D. L. Appling,Summability of real-valued set functions, Rivista Mathematica, University of Parma,8, no. 2 (1967), pp. 77–100.
3. W. D. L. Appling,A note on the finite additivity of certain set functions, Bollettino U.M.I.,4, no. 2 (1968), pp. 249–255.
4. W. D. L. Appling,Two inclusion theorems for real-valued summable set functions, Rendiconti dei Circolo Matematico di Palermo, series II, tomo 18 (1969).
5. W. D. L. Appling,Integrability and closest approximation representations, Ann. di Mat. Pura et Applic. (to appear).