@article{RSMUP_2003__109__235_0, author = {Fuchs, Laszlo and Shelah, Saharon}, title = {On a non-vanishing {Ext}}, journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova}, pages = {235--239}, publisher = {Seminario Matematico of the University of Padua}, volume = {109}, year = {2003}, zbl = {1073.13005}, mrnumber = {1997989}, language = {en}, url = {http://www.numdam.org/item/RSMUP_2003__109__235_0/} }