1. Some limit theorems on integrals in an abstract set;Andersen;Danske Vid. Selsk. Mat.-Fys. Medd.,1946
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3. Pointwise convergence in terms of expectations;Austin;Z. Wahrscheinlichkeitstheorie und Verw. Gebiete,1974
4. Another look at the martingale theorem;Baez-Duarte;J. Math. Anal. Appl.,1968
5. Pointwise in terms of weak convergence;Baxter,1974