@article{PORMA_1975__34_4_115265,
     author = {Gregory, M.B. and Metzger, J.M.},
     title = {Functions {Riemann-Stieltjes} integrable against themselves},
     journal = {Portugaliae mathematica},
     pages = {199--211},
     publisher = {mathdoc},
     volume = {34},
     number = {4},
     year = {1975},
     mrnumber = {0407214},
     zbl = {0321.26008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1975__34_4_115265/}
}