00538nam a2200193Ia 4500008004100000020001800041040000900059050001200068100006500080245006500145250000800210260001600218260001300234260000900247300001600256365001200272653002500284700003500309241218s9999    xx            000 0 und d  a9783030725655  cJKRC  aB33  Q1  aNonlinear Analysis, Differential Equations, and Applications 0aNonlinear Analysis, Differential Equations, and Applications  a1st  aSwitzerland  bSpringer  c2021  aix ; 793 p.  b9037.55  aFunctional equations  aRassias , Themistocles M ; ed/