@article{JRAM_1978__0299_0300_152004,
     author = {H. Ratschek},
     title = {Die subdirekte {Unzerlegbarkeit} der {Intervallrechnung.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {287--293},
     publisher = {mathdoc},
     volume = {0299_0300},
     year = {1978},
     zbl = {0367.08003},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1978__0299_0300_152004/}
}