@article{10_4153_CJM_1974_133_4,
     author = {Marsden, M. J. and Riemenschneider, S. D.},
     title = {Korovkin {Theorems} for {Integral} {Operators} with {Kernels} of {Finite} {Oscillation}},
     journal = {Canadian journal of mathematics},
     pages = {1390--1404},
     year = {1974},
     volume = {26},
     number = {6},
     doi = {10.4153/CJM-1974-133-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-133-4/}
}