00271nam a2200097Ia 4500008004100000082001700041100001500058245006000073260002900133300001100162240817s9999    xx            000 0 und d  a523.844 L91p  aShiffer ,S 0aProblems in the theory of functions of complex variable  c1972a Mascowb Mir Pub.  a332 p.