@article{MS2_1972__30_166220,
     author = {Flemming Topsoe},
     title = {Measure {Spaces} {Connected} by {Correspondences.}},
     journal = {Mathematica Scandinavica},
     pages = {5--45},
     publisher = {mathdoc},
     volume = {30},
     year = {1972},
     zbl = {0241.28010},
     url = {http://geodesic.mathdoc.fr/item/MS2_1972__30_166220/}
}