@article{10_1017_S0017089500008156,
     author = {R\'ev\'esz, Szil\'ard GY. and Ruzsa, Imre Z.},
     title = {On approximating {Lebesgue} integrals by {Riemann} sums},
     journal = {Glasgow mathematical journal},
     pages = {129--134},
     year = {1991},
     volume = {33},
     number = {2},
     doi = {10.1017/S0017089500008156},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500008156/}
}