1. Some limit theorems on set-functions;Andersen, Erik Sparre;Danske Vid. Selsk. Mat.-Fys. Medd.,1948
2. Partial ordering in the theory of martingales;Bochner, S.;Ann. of Math. (2),1955
3. Sur un théorème de Jessen;Dieudonné, Jean;Fund. Math.,1950
4. Intorno al passaggio al limite sotto il segno d’integrale;Fichera, Gaetano;Portugal. Math.,1943