@article{VUU_2019_29_2_a0,
     author = {V. Ya. Derr},
     title = {On the extension of a {Rieman{\textendash}Stieltjes} integral},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {135--152},
     year = {2019},
     volume = {29},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2019_29_2_a0/}
}