00369nam a2200121Ia 4500082001700000100003800017245007700055260003400132300001000166490003900176500000500215700002700220  a516bG357.ED  aGerard, R. and Ramis, J. P. , ed.  aEquations differentielles et systemes de pfaff dans le champ complexesb  aBerlinbSpringer-Verlagc1978  a364p.  aLecture notes in Mathematicsv 712  a  aRamis, J. P. ; jt. ed.