@article{10_21136_CMJ_1961_100487,
     author = {Kr\'al, Josef},
     title = {On $r$-dimensional integrals in $(r+1)$-space},
     journal = {Czechoslovak Mathematical Journal},
     pages = {626--628},
     publisher = {mathdoc},
     volume = {11},
     number = {4},
     year = {1961},
     doi = {10.21136/CMJ.1961.100487},
     mrnumber = {0132146},
     zbl = {0191.05904},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1961.100487/}
}