00342nam a2200121Ia 4500082002000000100003000020245004200050260004800092300001000140490006000150500000500210700000500215  a515.35bN943.IS  aNovikov, S. P. and Others  aIntegrable systems; selected papersb  aCambridgebCambridge University Pressc1981  a266p.  aLondon Mathematical Society lecture note seriesv v. 60  a  a