@article{JRAM_1994__447_153591,
     author = {Peter Laurence and Edward Stredulinsky},
     title = {On quasiconvex equimeasurable rearrangement, a counterexample and an example.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {63--82},
     publisher = {mathdoc},
     volume = {447},
     year = {1994},
     zbl = {0848.35003},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1994__447_153591/}
}