Jürgen Forster Niels Schmitt Hans-Ulrich Simon Estimating the Optimal Margins of Embeddings in Euclidean Half Spaces. 402-415 2001 conf/colt/2001 COLT/EuroCOLT http://link.springer.de/link/service/series/0558/bibs/2111/21110402.htm db/conf/colt/colt2001.html#ForsterSS01