?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Gnecco%2C+Giorgio&rft.aufirst=Giorgio&rft.aulast=Gnecco&rft.date=2016&rft.title=Learning+with+hard+constraints+as+a+limit+case+of+learning+with+soft+constraints&rft.btitle=Proceedings+of+the+24+th+European+Symposium+on+Artificial+Neural+Networks%2C+Computational+Intelligence+and+Machine+Learning+(ESANN)&rft.genre=proceeding