@article{JRAM_1964__0214_0215_150609,
     author = {Otton Martin Nikodym},
     title = {Summation of fields of numbers in {Boolean} tribes. {Upper} and lower summation in the general case. {Complete} admissibility. {Square} summabilitiy. {Equivalence} of fields of numbers. {(IV).}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {84--136},
     publisher = {mathdoc},
     volume = {0214_0215},
     year = {1964},
     zbl = {0178.38903},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1964__0214_0215_150609/}
}