Helton, B. W.Jonas, Nelson James2020-06-012020-06-011968-05Jonas, N. J. (1968). Sum integrals of interval functions (Unpublished thesis). Southwest Texas State University, San Marcos, Texas.https://hdl.handle.net/10877/10513No abstract prepared.Text42 pages1 file (.pdf)enintegralsinterval functionsreal numbersThesis