@article{JRAM_1993__444_153569,
     author = {Ian Hambleton and Matthias Kreck},
     title = {Cancellation, elliptic surfaces and the topology of certain four-manifolds.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {79--100},
     publisher = {mathdoc},
     volume = {444},
     year = {1993},
     zbl = {0779.57015},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1993__444_153569/}
}