@article{10_4153_CJM_1968_082_4,
     author = {Knopp, Paul and Sinkhorn, Richard},
     title = {A {Note} {Concerning} {Simultaneous} {Integral} {Equations}},
     journal = {Canadian journal of mathematics},
     pages = {855--861},
     year = {1968},
     volume = {20},
     number = {1},
     doi = {10.4153/CJM-1968-082-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1968-082-4/}
}