00259nam a2200109 a 450000500170000002000150001708200130003210000170004524500250006226000360008730000260012320251203110828.0  a3764377739  a515bVAT  aVath, Martin  aNonstandard analysis  aBerlinbBirkhauser Verlagc2007  aviii,252p.c26 cm. HB